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Some companies are born to follow the market, while others are born to set new standards for it.
Bao Chi Company Limited (BCC) – belongs to the latter. From its humble beginnings with basic welding tools to mastering the Powder Overlay Process (POP) and developing the D-Plate brand, BCC has remained steadfast to a simple yet profound philosophy: people are the center, and technology is the key.

People at the center – the foundation of every technology

For BCC, technology is never the destination; it is the tool to unleash human capability.
Over 15 years ago, when many enterprises were busy importing equipment and solutions, BCC chose the opposite direction: train people first, develop technology later.
Each welder and POP technician is trained not just to “operate machines” but to “understand materials, steel, and wear.”

This philosophy created a generation of skilled and passionate Vietnamese engineers – able to stand firm amid the roar of cement plants or the heat of steel furnaces – yet still embody the craftsmanship spirit of Vietnam: meticulous, patient, and inventive.

Every BCC innovation – from alloy formulation and POP process design to workshop systems – begins with an understanding of people: understanding the fatigue of operators, the needs of factories, and the pressure of plant owners.
Technology at BCC, therefore, is not just machinery; it is the humanization of technical intelligence.

Technology as the key – but the key must open the right door

If people are the center, technology is the key to unlock productivity, durability, and innovation.
For BCC, POP (Powder Overlay Process) is the “broth” of the industrial phở – where every element is harmonized to create the durable two-layer D-Plate.

In Vietnamese cuisine, a delicious bowl of phở depends on the subtle balance of bones, ginger, cinnamon, star anise, and the right simmering. Phở bò (beef) and phở gà (chicken) each require a different recipe to reach perfection.
Similarly, in wear protection engineering, every working condition – abrasion, erosion, corrosion, impact, heat, or cavitation – requires a unique “recipe” of alloy powder composition.

This is the essence of BCC’s POP technology: not following predefined formulas, but designing custom alloy ratios for each “industrial dish” – every cement line, mine, or steel mill.
Seen this way, POP welding is not merely a technical process but an art of metallic gastronomy, where Vietnamese engineers orchestrate the perfect symphony of fire and steel.

D-Plate – from product to global solution

From this foundation, BCC has developed the D-Plate ecosystem – the two-layer wear-resistant steel plate and the D-Plate Standard Workshop package: an “industrial phở kitchen” that brings POP technology directly to customers’ factories.

Each D-Plate Workshop is like a kitchen inside an industrial zone:

• Ingredients: alloyed mixed powder and wire will be supplied by BCC.

• Recipe: customized POP blend ratios for each wear condition.

• Chef: local engineers trained by BCC.

• Result: standardized D-Plate ready for immediate use in production.

Through decentralized manufacturing, D-Plate not only saves logistics costs and lead times but also enables developing countries to master wear-protection technology, build local capacity, and reduce dependency on imports.

BCC’s five-year strategy is to establish a network of D-Plate Workshops across Southeast Asia, North Africa, and Australia – regions with high demand for wear-resistant materials in cement, mining, and thermal power industries.
Each workshop is a “hot, fresh industrial phở bowl” cooked locally with Vietnamese precision.

The path of Vietnamese technology makers

“People at the center – technology as the key” is not only a technical principle but also a cultural statement of BCC.
In heavy industries – where massive machinery and strict processes often overshadow the human touch – BCC chooses to place people back at the heart of innovation.

Only humans can truly understand the pain of worn steel, feel the heat of the arc, and carry the weight of each D-Plate.
Only humans – with knowledge, dedication, and belief – can turn technology into a Vietnamese culture of creativity.

From a small group of young engineers, BCC today stands as a pioneer in Vietnam’s welding repair and wear-protection materials.
But for them, this journey has just begun.
Ahead lies a world waiting to taste Vietnamese industrial phở – from cement plants to coal mines, from steel mills to power stations across continents.

Conclusion – When technology carries the soul of Vietnam

If phở represents the subtlety of Vietnamese culture, D-Plate represents the subtlety of Vietnamese industry.
A good broth needs steady fire, just as sustainable technology needs dedicated people.
For BCC, that fire is the Vietnamese spirit – creative and resilient; and technology is the torch lighting the path for Vietnamese intelligence to reach the world.

PEOPLE AT THE CENTER – TECHNOLOGY AS THE KEY

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D-Plate – The “Phở Bowl” of Heavy Industry

In Vietnam, phở is more than just food – it nurtures both body and spirit. A good bowl of phở is the harmony of many elements: a clear yet rich broth, soft noodles, tender meat, fresh herbs. No single ingredient can make phở on its own. It is the combination that creates true value.

Heavy industry works the same way. Gigantic machines in cement, mining, or steel production face a silent enemy: wear and abrasion. Falling rocks, ore impact, constant material flow – every steel component is tested daily. Ordinary steel alone cannot endure. It fails, breaks down, and costs millions in repairs and downtime.

 That is where D-Plate comes in! 

One Plate – Two Components

• Base steel: tough, ductile, and easy to process – like the noodles forming the frame of the bowl.

• Overlay alloy layer: rich in chromium and wear-resistant elements – like the broth, it defines durability and lifespan.

Together, they create an “industrial phở bowl” – strong, flexible, and ready to withstand the harshest conditions.

The Silent Armor

In a cement plant, every conveyor belt, clinker chute, and dust duct is under heavy abrasion. In mining, truck beds and transfer chutes endure constant impact. D-Plate is the silent armor for these parts. It does not boast or make noise, but those who use it know: with D-Plate, equipment runs longer, maintenance costs drop, and service life is extended.

The Secret of Endurance 

If phở is delicious thanks to hours of simmering broth, D-Plate is durable thanks to POP (Powder Overlay Process) – BCC’s proprietary hardfacing technology. Each alloy layer is evenly applied, carbide crystals are precisely distributed, ensuring stable quality. Just like a perfectly simmered broth, every plate is consistently reliable.. 

More than Steel – A Promise 

D-Plate is not just wear-resistant steel. It is the confidence that factories can operate without fear of sudden breakdowns, costly repairs, or long downtimes.

Like phở nourishes human health, D-Plate sustains the strength of industry – delivering assurance, stability, and durability, the values every heavy industry enterprise depends on.

D-Plate – Strong as Steel, Refined like Phở. 

If phở is the symbol of harmony in life, then D-Plate is the symbol of durability in production – born from the right formula, the right technology, and the right spirit of innovation.

Download the introduction of D-Plate

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D-Plate Standard Workshop by BCC

In heavy industries such as cement, mining, steel, and coal-fired power, wear and abrasion are the silent enemies. A single component failure can bring an entire production line to a halt, causing losses worth millions. To tackle this challenge at its root, Bao Chi Company (BCC) has developed the D-Plate Workshop – a comprehensive service package for the production and application of two-component hardfacing wear plates.

D-Plate – Powered by Proprietary POP Technology

Unlike conventional wear plates, D-Plate is manufactured using POP (Powder Overlay Process) – a hardfacing technology exclusively developed and mastered by BCC. This process applies a uniform chromium-carbide alloy overlay (HRC 58–60) firmly bonded to SS400 steel base plates, creating superior wear resistance, heat tolerance up to 250 °C, and extremely low abrasion loss (ASTM G65 < 0.35 g).

Wide Applications in Heavy Industries

D-Plate can be tailored to meet diverse harsh working conditions, especially in:

- Cement: feed chutes, clinker pipes, vertical mill liners, separator blades.

- Mining: hoppers, transfer chutes, conveyor systems, ore truck beds.

- Steel: slag chutes, ducts, high-temperature furnace parts.

- Coal-fired power plants: ash pipelines, fans, coal handling chutes.

D-Plate Workshop – A Turnkey Solution

BCC offers more than wear plates – we deliver a complete solution:

- Design and installation of a standardized D-Plate workshop.

- Technology transfer for D-Plate and D-Parts production.

- Training for engineers and operators to ensure in-house capability.

- Access to proprietary alloy powder formulas and welding solutions for multiple wear conditions.

Customer Value

With the D-Plate Workshop, enterprises not only gain access to premium wear-resistant products but also achieve self-reliance in production, reduce dependency on imports, cut downtime, and secure long-term competitiveness.

BCC – Partnering with heavy industry, protecting equipment, and strengthening trust.

Supported documents:

1. D-Plate Standard Workshop Introduction 

2. BCM WP Series Specifications

3. D-Plate Introduction

4. D-Plate100 - Testing report

5. KOVI Catalogue for powder specifications

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Hardfacing electrodes are specialized welding consumables used to deposit a hard, wear-resistant layer on the surface of machinery parts, offering enhanced durability and resistance to abrasion, impact, and corrosion. 
Hardfacing electrodes are designed to build up worn surfaces, repair damaged parts, and protect against wear and tear in various applications. 

KOVI produces wide range of hardfacing electrodes to anti the wear factors.

• High-Chromium Alloys: These are widely used due to their excellent hardness, corrosion resistance, and wear resistance, often containing chromium carbides for enhanced properties. 
• Manganese Steel: Used for applications with heavy impact and shock wear, these electrodes work-harden under impact, increasing their hardness. 
• Nickel-Based Alloys: These are used for metal-to-metal wear resistance. 
• Other Alloys: Electrodes are also available with tungsten carbide for high-stress abrasion resistance. 

Hardfacing is used in various industries, including:

• Mining 
• Coal-fired power plants
• Cement and Construction materials
• Steel making plants
• Chemical industries 
• Sugar cane
• Petrochemicals, Oil & Gas
• Ground-engaging (earth moving) equipment 
• Metal cutting 

1. Download introduction of Hardfacing Electrodes
2. Catalogue of Hardfacing electrodes

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[tintuc]Procedcure of resfurbishing the grinding table liner and roller tires of vertical mill (Loesche, Fuller, Pfeifer, Polysius…)

Wear is a natural problem in the process of grinding hard and highly abrasive materials. Under high grinding pressure, hard (highly abrasive) material particles are pressed together with a gap just enough for the particles to be crushed. In most cases, this force is carried out by 2 metal surfaces with the material particles in the middle, in some cases the material particles are under the action of 3 surfaces. 2 Details (surfaces) of the pressed metal surface break the material in the middle into smaller particles, the shape of the material particles will be formed based on the direction of the force and the contour of the pressed surface. In parallel with that process, the metal surface (even though it is made of hard alloy material) will also have its elements gradually cut by the material particles.

ASTM G-65 measures the wear resistance of a metal surface using a grinding wheel. However, the characteristics and conditions of the abrasive are not the same as those of the actual abrasive. Therefore, the standard is only a reference for evaluating the quality of the weld deposit and the alloy in the wire used. The values ​​given by the standard do not fully assess the life of the weld deposit in practice.

However, some softer and tougher materials will last longer than harder materials in grinding applications. These alloys include austenitic manganese, martensitic, and some other carbides (usually smaller carbides, such as: Titanium Carbide). In conditions where there is very little impact, materials with a high-Chrome Carbide or/and Complex Carbide are the optimal choice.

1. Preparation for buildup and hardfacing:

Usually, in the process of welding the grinding rollers, the surface of the grinding rollers & grinding table is very hard and difficult to machine. Therefore, Carbon Electrode Blowing is the optimal solution that can be used to remove the old weld layer (if any) on the surface of the rollers & grinding table. The carbon blowing method also separates and minimizes the heat-affected area of ​​the weld layer while still maintaining the good weld layer on the surface. The advantage of carbon blowing & surface grinding is to create a smooth surface, control the width of the weld (blowing) to create the best weld layer. The grinding rollers & grinding table plate can be done while still inside the grinding machine or removed from the working position and transferred to the supplier's factory. In the case of performing the welding work on the grinding table roller at the supplier's workshop, the roller will be performed on the roller turntable to rotate at the rotation speed condition. The installation must ensure the centering of the roller and strict control during the welding process to ensure the contour of the roller. For the grinding table. There will be a specially designed system for the welding torch to rotate along the circumference of the pads. The penetrant testing method (PT) must be performed to detect defects before starting welding. 

2. PT (Penetrant Testing)

Non-destructive testing with penetrant material (Penetrant Test) is a mandatory requirement in the process of performing the welding work on the roller and grinding table pad. PT normally only works on smooth surfaces (such as casting surfaces). Therefore, the surface must be ground and cleaned before performing. PT is a testing method to detect surface discontinuities and cracks. PT is especially effective on austenitic alloy materials. Because these materials cannot be tested for magnetic properties. ASTM E 165 is the standard for this test method. 

3. Pre-heating

Normally, cast iron materials with 19.25% chromium do not require heating. But in some cases (especially in very low ambient temperatures), heating to narrow the temperature difference and remove moisture can be used. The maximum heating temperature can be 65 degrees Celsius. During the process, the temperature between welds should not exceed 150 degrees for cast steel and 100 degrees Celsius for cast iron. No heating is required when performing size compensation welding and welding of carbide composite welding wire. 

The chemical composition of the base material and the filler material is an important factor in determining the heating requirement & temperature control between welds. In the case of conventional brazing the material is a martensitic alloy. Brazing materials for brazing (specifically high chromium carbide alloys and high chromium steels) are not included in the above material category because the surface hardness of the layer is formed by very hard microstructures in a flexible crystal lattice, and it is independent of the quenching process. Martensitic alloys form their surface hardness and wear resistance through quenching at high temperatures or large differences between the lines. This is an important factor in understanding and determining the heating requirements and heat control during brazing.

Maintaining the temperature throughout the weld overlaying of the grinding table liner and roller tires is a very important factor affecting the quality and safety of the weld deposit. In the case that the temperature of the weld deposit falls below the interpass temperature before the weld deposit is finished, the hardening process begins to occur, an increase in the volume of the microscopic particles, the extent of which depends on how far the temperature has fallen from the interpass. Why is this? In fact, we do not want the surface of the weld deposit to harden before welding the next weld deposit onto it. When we weld the next weld deposit onto the hardened surface, the temperature of the additional weld deposit will soften the hardened material. The final weld deposit will be hard according to design, but the weld deposits below will be soft and unstable. This can easily create problems such as cracking after the machine runs. Therefore, maintaining the temperature of the weld layer within the interpass temperature range and cooling under ambient temperature conditions is extremely important to create a layer of a uniform, rigid and hard-to-harden weld layer according to the design thickness.

Refurbishment (Build-up and Hardfacing)

Build-up and hard-facing welding are based on the equipment conditions and the form of implementation (in the service shop or inside the mill). The choice of which type of welding material for each welding layer (build-up and hardfacing) is based on the properties of the base material (roll, mill table pad) and the required level of the build-up layer after welding. 

• ·Buffer layers
• ·Buildup layers
• · Hardfacing layers

In case the base material of the roller and the grinding table lining is high Chromium cast iron or Ni-Hard IV, the welding materials for both layers are the same. High chromium carbide wire (e.g. D100), or carbide combination (e.g. D200) can be used.

In case the base material is made of ordinary cast steel, it is necessary to add a backing layer to create a connection between the base material and the buildup layer. The materials that can be used are ER 309 or ER 307 welding wire.

Note: In all cases, the total thickness of the buildup layer should not exceed 65mm.

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[tintuc] FAQ of hardfacing wear plate

Q: What is the hardfacing of wear plate?

A: Hardfacing Wear Resistant Plate

Wear resistant steel plates are high-strength materials, typically made up of alloy steels, quenched and tempered steels, or carbon steels. These plates' most common alloying elements are chromium, manganese, nickel, and molybdenum.

Q: What is the purpose of a wear plate?

A: What are wear plate and where are they used | Cutting Edges

Wear plate play a critical role in the protection and longevity of earthmoving, mining and other industrial equipment. The outcome of using fit-for-purpose wear plates is threefold: Reduced cost of replacement parts. Reduced cost of maintenance.

Q: What is a steel wear plate?

A: Wear plates or liners are used to prevent damage to the main machinery due to abrasion or impact and to increase the life of the machine. Examples of machines or components that might require wear plates or liners are: Crushers. Shredders. Casting equipment.

Q: What size are wear plate?

A: Wear Plate Dimensions :

Thickness : 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 25mm- 32mm, 32mm-45mm, 45mm-51mm, 51mm-80mm, 80mm- 130mm. Width : 1000mm, 1500mm, 2000mm, 2500mm , cut widths provided. Length : 2000mm, 2500mm, 3000mm, 4000mm, 4500mm, 5000mm, 6000mm, Cut lengths provided.

Q: What are bucket wear plates made of?

A: Wear Plate is a duplex material consisting of a very tough and highly wear resistant alloy overlaid into a shock absorbing mild steel or chromium steel backing plate.

Q: What are the properties of wear resistance plate?

A: Wear Resistance Steel Plate is made of high-quality materials, which ensures that they will last for a long time. These plates are made from 100% steel, so they will not rust or corrode. The plates are also lightweight, so you can easily move them around. The steel plates are made of high-quality material.

Q: What are wear plates made of?

A: Produced out of a duplex material that generally consist of a tough, wear resistant alloy coating and a shock absorbing steel or chromium steel backing plate, these combined properties enable the product to perform under extreme conditions.

Q: What are the hardest wear plate?

A: Extreme is the world's hardest wear plate with a nominal hardness of 60 HRC and typical hardness of 650–700 HBW.

Q: What is the hardness of wear plate?

A: For this reason steel with hardness of around 400 Brinell is the most commonly specified and used. However hot rolled steel plate products for more exacting abrasive conditions are readily available in 500 Brinell hardness while even harder steel plates are also manufactured.

Q: What is the hardness of chromium carbide wear plate?

A: Hardness: Alloy layer macro hardness HRC57-63, carbide hardness hv1400-1800. Wear Resistance: low-carbon steel 20-25 times, stainless steel, High Manganese Steel 8-12 times, general high-carbon high chromium wear-resistant steel is more than 1.5 TIMES.

Q: What are bucket wear plate made of?

A: Wear Plate is a duplex material consisting of a very tough and highly wear resistant alloy overlaid into a shock absorbing mild steel or chromium steel backing plate.

Q: What are the uses of wear resistant plates?

A: Wear Resistant Steel Plates are used in the construction of buildings and bridges in addition to being used for kitchenware and appliances like cutlery and plates. Wear Resistant Plates can be used in a variety of materials, including cast iron, ductile iron, high-carbon steel, low-carbon steel, and stainless steel.

Q: What is the hardness of wear plate?

A: For this reason steel with hardness of around 400 Brinell is the most commonly specified and used. However hot rolled steel plate products for more exacting abrasive conditions are readily available in 500 Brinell hardness while even harder steel plates are also manufactured.

Q: What are the uses of wear resistant plate?

A: Wear Resistant Steel Plates are used in the construction of buildings and bridges in addition to being used for kitchenware and appliances like cutlery and plates. Wear Resistant Plates can be used in a variety of materials, including cast iron, ductile iron, high-carbon steel, low-carbon steel, and stainless steel.

Q: What is wear plate?

A: What are Wear-Resistant Steel Plates? Wear-resistant steel plates, also named abrasion-resistant plates (AR Plates), are used to reduce wear and tear on equipment surface caused by intense rolling abrasion and impact.

Q: What is a steel wear plate?

A: Wear plates or liners are used to prevent damage to the main machinery due to abrasion or impact and to increase the life of the machine. Examples of machines or components that might require wear plates or liners are: Crushers. Shredders. Casting equipment.

Q: Can wear plate be recycled?

A: Yes, steel wear plates can be recycled at the end of their service life, provided they are free from contaminants and processed correctly.

Q: What is the cost comparison between wear plate and other wear-resistant solutions?

A: While wear plates may have a higher initial cost, they can offer better value in the long run due to their durability and reduced need for frequent replacement. However, the total cost depends on the specific application and usage patterns.

Q: Can wear plate be used in high-temperature environments?

A: Some wear plates are designed to withstand high temperatures, but it depends on the specific material composition and heat-resistant properties.

Q: Can wear plates be customized?

A: Yes, wear plates can be customized to specific dimensions, shapes, and thicknesses to fit the requirements of different applications and equipment.

Q: What is special of D-Plate
A: D-Plate is a hardfacing steel plate manufactured by powder overlay process (POP) an abrasion resistant chromium carbide overlay and some other carbides to an impact resistant mild steel which is our standard base material. This can be changed to meet any customized requirements. in other word, D-Plate can be called POP Wear Plate

Overlay Material

D-Plate are overlaid by using high quality formulated powder and solid mild steel wire that is an austenitic chromium carbide iron. The microstructure consists of mainly M7C3 carbides in a carbide austenite eutectic matrix. Chemical composition of D-Plate’s overlay materials may depend on the application of operating environments of the customers.

More details at downloadable files: Test result of standard D-Plate

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[tintuc]D-Tech, part of BCC, is professional manufacturer of hardfacing wear plate, wear parts and refurbishment services applying for cement plant, power, mining etc since 2014. Since 2019, BCC invest in production line of welding electrode for future plan which will focus on metallurgical technology. D100e is the first product of hardfacing based on our research and development.

D100e hardfacing electrode which designed, tested and manufactured by BCC

Since April, 2022, we launched first product for hardfacing application. D100e is the chromium carbide covered electrode. The product was desgined for small size and daily hardfacing work. It means customer keep products at stock for all the time, then they can do the hardfacing at small size in order to keep machines operating in the best performance before closing for big shut down. 

Applications of D100e hardfacing electrode

D100e hardfacing electrode was suitable for hardfacing, repairing and refurbishing for equipment and machine at 

- Cement plants

- Coal-fired power plants

- Brick plant

- Sugar cane plant

- Mining

- concrete mixing plant

- Earth moving equipments

Some key factors of D100e hardfacing electrode

1. deposition efficiency

For normal welding electrode the efficiency is just about 45-55%. But for D100e, the efficiency can up to 76% which is almost closed to rate of flux cored wire.

2. Productivity

Product was design for low-heat-input process, it means we use lower amps and volts for welding. Then we can increase the productivity easily whenever we increase the electricity factors.

3. Dilution and quality of hardfacing layers

with low amps and volts during welding, D100e can give low dilution which can the specifications of hardfacing layer in very first layer of deposit.

inside the manufacturing plant, processs of testing the weldablity and visual wear resistance

 Download introduction of Hardfacing Electrodes

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[tintuc]As a wear plate producer in Vietnam,D-Techs has a big advantage to do the fabrication job based on wear plate where we can optimize cost in order to have more competitve.

In July 2015, D-Techs has delivered the product to Nghi Son Cement (NSCC) which is a Japanses Cement Producer in Vietnam. NSCC is one of the best Cement Producer in Vietnam. Their product are using in most of important projects in Vietnam. They also is one of best company who are applying management process to control the production cost by using the cost-effective products.

BCC is prouded to become the supplier of NSCC to bring our best products in order to be a part of their production management.

Job Details:

·         Industry: Cement

·         Equipment: Vertical Roller Mill

·         Part: Guide Vane

·         Product: D-Plate 100

Some typical photos:

More details at downloadable files: D-Plate Introduction & Test result of standard D-Plate

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The deposited wear plate is a dual-metal steel plate which manufactured by overlay welding process. The wear resistant alloys were welded on the surface of Mild steel plate. This process is order to create a surface which can work at high wear conditions. It can be fabricated as the properties of mild-steel.

The overlay welding process can be  SAW, FCAW (Open arc), Sub-Arc Welding (The deposited layers can be made from calculated alloys using carbon electrode to melt weld pool). Depending each welding process, the width of welding seam will be difference.

The deposited wear plate can be fabricated by various process, such as bending, cutting, welding, studding etc. Plate just can be cut (thermal cutting) by Plasma flame.

The deposited wear plate can be applied at many difference industries which contains difference wear factors, such as: Abrasion, Corrosion, Heat, Impact, etc. By changing the welding consumable (alloys), we can create a new product which is suitable for specific application.

There are 02 processes to make the wear plate

Drum Process (round process): mild steel plate is bended to become a drum and installed on the the machine. The plate will be flattened back after welding.

The mild steel plate will be clamped on the flat position and make the welding on the surface.

Some typical industries: Cement, Coa-fired Power Plant, Mining, Quarrying…

Typical application of wear plate

More details at downloadable files: D-Plate Introduction & Test result of standard D-Plate

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With D-Tech™ Overlay Welding Technology, We provides a complete range of solutions for hard overlay welding. The following services are offered for vertical roller mills:

• Hard overlay welded grinding rolls and grinding tables 
• Welding consumables of alloys specifically matched for use in vertical roller mills 
• Portable welding system consisting of welding head, control unit and DC power supply which desgined and manufactured by BCM 
• D-Tech™ 3R Services can be done either at the 3R Workshop or at the mill plant site 

D-Techs™ 3R Offer the following Benefits:

• New grinding rolls and grinding plates made of hard casting with and without hardfacing to ensure long service life-time 
• Regeneration of grinding rolls and grinding plates to avoid the purchase of costly spare parts 
• Complete, cost effective services Supply of hard casting and hard overlay welding from a single source 
• Excellent references in the line of welding engineering 
• Experience in solving wear problems for many years.

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We, D-Tech, manufacture several types of D-Plate which are chromium carbide hardfacing wear plate in Vietnam and worldwide markets. D-Plate can be well used in various industries, such as cement industry, power station industry, steel industry and mining industry.

Wear plates and wear steel parts are used in many applications where friction between two parts or materials creates degradation.

Its wear-resistant chromium carbide alloys with 4.5 to 5% carbon added to sturdy carbon steel substrates. Wear plates are expendable items that are used to prevent excessive wear or damage to expensive equipment.

Abrasion resistant steel wear plate may bolt onto a machine that slides or rotates in a manufacturing process, while they can also be found where manufactured parts or minerals are regularly rubbing or abrasively contacting the surface.

Wear plate is commonly a type of abrasion resistant steel plate that is considered extremely durable, especially under harsh conditions.

However, various significant refinements and strategies have occurred. And as of present, the range of overlay wear plate accessible includes chromium and tungsten carbide grades, which possess excellent resistance to abrasion, impact, and erosion even at both ambient and elevated temperatures.

Meanwhile, in the more significant part of critical abrasion surroundings, the chromium carbide alloys are the primary profitable solution.

What types of material are wear resistant plate made of?

Alloy Chemistry

The highest ordinary used alloy facing is a high chromium iron consists of precisely 1/3 of Chromium and in surplus of 4% combined carbon.

D-Tech is making this to correlate to POP plate with the chemistry of Chromium of up to 34.0%, carbon of 5.4%, Manganese of 3.5%, and the others at 1.3%, Balance Fe.

Meanwhile, this standard alloy can be changed in many different ways; it can improve the abrasion resistance while lowering the toughness, or the other way round. On the contrary, the matrix can be made harder by reducing the manganese to 1%, with some reduction in firmness. Also, further refinement may be accomplished by the addition of other alloying elements.

Carbides

The substance that provides high chromium powder alloys with their capability to withstand abrasion is the establishment of primary carbides from a chemical compound of iron, Chromium, and carbon, or iron, Chromium, or carbide, which is also known as chromium carbide. Pure, high rate chromium carbide can be manufactured; however, it is costly for large-area preservation, so D-Techs makes use of mixed carbide, which involves both Chromium and iron. This makes up the primary carbide with the formula M7C3, where M specifies the mixture of metal and Chromium in the compound.

Hardness

A standard overlay alloy consists of a compound of chromium carbides in a matrix of a chromium iron-carbon alloy. The hardness of primary chromium carbides is proportionate of 1700HV correlate with. For instance, ordinary workshop steel files, with firmness of 600HV. In general, the hardness of these alloys can be calculated using a Rockwell hardness tester. Even though it neither measures the carbide or the matrix, it gives an agreeable general proof of the hardness of the alloy. An average value of being 54-60 HRC.

Microstructure

In the extension of chemistry, the most significant characteristic of the alloy overlay is its microstructure. Hence, when checked out under a microscope, the carbides will take the form of white substance against a dark background, that that’s the matrix. A perfect microstructure, for more excellent abrasion resistance, must have a dense array of needle-like carbides that, in cross-segment, look as slender hexagons with a small hole in the middle.

Moreover, whenever you notice an appearance of uneven shaped spots or avenues of white. Such as either ladder, fish-bone patterns, or central poles with rungs on any of the sides. This is a sure sign that the carbon content is beneath optimum for high abrasion resistance, but it has also improved impact-resistant properties.

How we supply for wear resistant plate?

• Wear Resistance materials: We manufacture solid welding wire and formulated powder by our own selves, with strict rule on the alloy composition.
• Base Plates: We get all our base plates from China’s biggest steel Mills and are restricted to our strict quality assurance procedure.
• R&D Team: We provide an R&D team on both equipment and hardfacing technology.
• Customized Wear Products: We also supply customized Wear products in line with our customers’ demand.

What else should I know before I order my hardfacing wear plate?

You should know the what hardness of the plate is and what the intent is of the liner. The harder the plate that is used, the longer it will last in service, but there are trade-offs. For some parts, you will need a softer material that is intended to wear out before your primary surface.

More details at downloadable files: D-Plate Introduction & Test result of standard D-Plate

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