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Chocky Bars and Wear Buttons

FH-ND: Your Professional Chocky Bars and Wear Buttons Manufacturer!

FH-ND was founded in 2005, located in Ningbo which is the famous city of export in China. After the development with a long history, we have become one of the famous manufacturers of ground engaging tools(G.E.T) in construction machinery and mining machinery areas. FH-ND is also an OEM and supplies high-quality wear parts to many famous companies in the world.

 

 

Why Choose Us

Rich Experience

Ningbo Fenghua ND Machinery Co., Ltd. was established in 2005 and has more than 10 years of experience in the research and development of wear-resistant castings, including bucket teeth, tooth seat edge plates, and other products for construction machinery.

Broad Market

Our parts are already exported to more than 50 countries in the world, mainly to Canada, the USA, Australia, Spain, Sweden, UK, Poland, Italy, Russia, Ukraine, Saudi Arabia, Kuwait, U.A.E., Peru, Chile, Brazil, Argentina, Egypt, Sudan, Algeria, South Africa, India, Myanmar, Korea, Singapore, etc.

Wide Product Range

The company offers a comprehensive range of products, covering most of the world's excavators, bulldozers, loaders, graders, and other wear-resistant accessories.

 

 

Quality Assurance

Using self-developed high-strength, high-quality wear-resistant steel, coupled with scientific and efficient production processes and strict quality management procedures, the company ensures that its products provide customers with high quality and cost-effective solutions.

 

Brief Introduction to Chocky Bars and Wear Buttons

 

 

Chocky bars and wear buttons are a series of bi-metal wear plates that are always made in small-size strips or pieces. It has a hard chrome white iron on the top layer for the function of wear resistance and a mild steel plate backup which has good impact resistance and also enables the bars weldable. Chocky bars and buttons are widely used on excavator buckets, wheel loaders, crusher rotors, shredder rotor discs, and other heavy-duty equipment to protect specific harshly worn areas.

 

Parts Of Excavator Bucket Laminated White Iron Cast Steel Chocky Bars CB90 CB100

 

Easy to Use: Chocky Bars and Wear Buttons Advantages

Chocky bars and wear buttons are very easy to use. No excessive cutting is required unlike sheets or wear plates. There is also no preheating or post-heating when welding.
They are easy to cut and form onto the inside or outside of contoured surfaces. Calculate your own layouts and patterns as needed. The notches in the Chocky Bar assist in cutting them to size. They can also be bent to shape for the specific application.
Chocky bars and wear buttons can be used in conjunction with other wear products to give you that extra advantage. Chocky bars are metallurgically bonded with martensitic white iron bonded to a weldable, impact resistant backing plate. They have long-term wear and impact resistance when compared to other wear plates.
Chocky bars and wear buttons are manufactured with notches on the mild steel backing plate. This design allows for easy cutting and shaping to fit correctly over contoured surfaces.
Post-bonding heat treatment processes can be undertaken to test Chocky Bars. This provides maximum abrasion protection. The steel backing plate absorbs high impact and allows for ease of fitting and use.

 

Features of Chocky Bars and Wear Buttons

Chocky bars and wear buttons are a combination of 700 BHN chrome castings and 200 BHN mild back plates, thus granting easy welding and a high resistance to wear. Available in various sizes and shapes to protect high wear areas.
Chocky Bars:
The chocky-shape allows the composition of a mosaic pattern for high-wear applications. It suits slightly concave or convex surfaces, thus being very versatile.
Wear Buttons:
The round shape ensures extreme protection and the possibility to be welded on small areas too. It also prevents weld cracks.

 

 

Applications of Chocky Bars and Wear Buttons

Applications of Chocky Bars:
Mining: Chocky bars are commonly used to protect the buckets and blades of excavators, loaders, and dragline buckets in mining operations, where abrasive materials such as rocks and ores cause significant wear.
Construction: In the construction industry, chocky bars are employed to safeguard the edges of construction equipment, such as bulldozer blades and trencher teeth, from wear caused by contact with abrasive materials like gravel and concrete.
Quarrying: Chocky bars are utilized in quarrying applications to protect the surfaces of crushers, screens, and conveyor systems from abrasion, thereby extending their operational lifespan.
Recycling: Recycling facilities use chocky bars to reinforce the edges of shredder blades and other equipment involved in processing metal, plastic, and other recyclable materials, where wear is a common issue.

Applications of Wear Buttons:
Earthmoving and Excavation: Wear buttons are frequently used in earthmoving and excavation equipment, such as excavator buckets and ripper shanks, to protect against abrasion and impact from rocks, soil, and other abrasive materials.
Forestry: In forestry applications, wear buttons are employed on logging equipment, such as harvester heads and mulcher teeth, to withstand the abrasive effects of wood, bark, and debris.
Material Handling: Wear buttons find applications in material handling equipment, including conveyor systems and transfer chutes, where they help prevent wear and damage caused by the movement of bulk materials.
Aggregate Processing: In aggregate processing plants, wear buttons are utilized to reinforce the surfaces of crushers, screens, and hoppers, ensuring continuous operation and minimizing downtime due to wear-related issues.

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How to Cut Chocky Bars

Cutting chocky bars or blocks is best done using high pressure water jets. It is not recommended to use thermal cutting procedures such as plasma cutting, arc-air, or an oxyacetylene (oxy) torch as there is a high risk of cracking and delamination due to localized heat penetration.
If the chocky bar has a section thickness at the notch of less than 25mm then it can be cut using an angle grinder, or using the following procedure: 

 

Secure the chocky bar or block to be cut with a vice or clamp.

 

Notch the backing plate at the pre-existing notch.

 

Notch the white iron to a minimum of 3mm deep, opposite the notch in the backing plate – noting that the deeper the cut, the cleaner the chocky bar or block will break.

 

Wrap the chocky bar or block with a rag and gently hit it with a soft-faced mallet. It should break cleanly where you have cut the notches.

 

How to Form Chocky Bars

 

 

"Forming" your chocky bars is the process of bending them to match the contour of the material or machinery they are being attached to.
First, ensure both the chocky bar and the surface it will be welded to are clean and free of dirt, scale, grease, water, and paint to ensure a good surface for welding and reduce the chances of weld cracking.
The forming process then varies slightly, depending whether you are forming the chocky bar to match an inside curve or an outside curve.
Outside Curves:

  • Tack weld one end of the bar in at least three places, using at least a half inch weld for each deposit.
  • Using a soft face hammer, hit the unwelded end of the Chocky Bar to bend (form) the bar to match the radius of what it is protecting.
  • Stitch weld the Chocky Bar into place, as per the Welding Procedure below.

Inside Curves:

  • Tack weld one end of the bar in at least three places, using at least a half inch weld for each deposit.
  • Starting in the centre of the Chocky Bar, hit it with a soft faced hammer to bend (form) the bar to match the radius of what it is protecting
  • Stitch weld the Chocky Bar into place, as per the Welding Procedure below.

 

Chocky Bars and Wear Buttons Welding Instructions

Prior to commencing any welding work, a risk assessment should be carried out to identify any hazards, assess the risks associated with them, and implement risk control measures using the hierarchy of control. 

Ensure both the chocky bar & wear buttons and the surface it will be welded to are clean and free of dirt, scale, grease, water, and paint to ensure a good surface for welding to reduce the chances of weld cracking.

 

Clamp the chocky bar and wear Buttons in place and tack weld one end in three places, using at least a half-inch weld for each deposit.

 

Follow the forming process outline above if required.

 

Stitch weld the chocky bar and wear buttons into place. Weld in runs, with each weld at least 50mm apart and at alternating ends or sides to minimise heat build-up and heat penetration. Please note that it is normal to see some cracking in your chocky bar and wear buttons during the welding process.

 

The maximum temperature reached during the welding process should be 200℃. Regularly use a thermal crayon or laser temperature probe to check.

 

Do Not:
Weld continuously which will cause the chocky bar and wear buttons to warp, delaminate, and crack.
Deposit weld within 2mm from the bond zone/joint between white iron alloy and the mild steel backing plate.

 

 

Our Factory

The company currently employs approximately 350 skilled professionals, boasting an annual output exceeding 20,000 tons.

 

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Ultimate FAQ Guide to Chocky Bars and Wear Buttons

Q: What are chocky bars and wear buttons?

A: Chocky Bars and Wear Buttons provide maximum protection against high abrasion for your excavator, shovel, or loader bucket. Wear bars are easily cut, formed, and welded onto contoured surfaces to provide that extra layer of protection against wear and impact under the harshest conditions. Wear buttons can be arranged and welded in a variety of ways to provide extra protection to smaller areas. With a variety of shapes and sizes, these products are easily installed in high wear areas resulting in reduced maintenance and downtime.

Q: What are chocky bars?

A: Named Chocky Bars or Chocky Blocks due to their similar appearance to a bar or block of chocolate, it is their unique design and notched backing that makes them easy to cut to size and form (bend into place) – offering tailored wear protection on flat and contoured surfaces. This makes them perfect for providing wear protection on excavator or loader buckets – where they are usually welded to high impact areas and/or to teeth and adaptors. However, they are also commonly used on drag lines, or in chutes, rock boxes, bins, hoppers, and other areas that see high impact. While Chocky Bars or Chocky Blocks are often used in preventative maintenance as a protective wear part on key areas, they can also be used to quickly patch or repair damaged areas to avoid long periods of plant downtime.

Q: What are the welding instructions for chocky bars and wear buttons?

A: Cleaning and preliminary preparation:
First, clean the surfaces to weld. The target is to remove paint, greases, oxides, and other elements that can produce blowholes in the welding stage or other problems.
Preheating:
Its main target is to prevent cracks. To avoid them, preheat and keep the area to weld between 150-200°C, special attention recommended in case of profiles with a higher than 25mm thickness or at a lower than +10°C temperature.
Preheating during welding does favor the emission of hydrogen from steel and, therefore, it considerably reduces the risk of cracking.
Covered electrode procedure:
If you use covered electrodes, we recommend to use basic covered electrodes with a low-hydrogen content.
Caution:
Do not preheat chocky bars and wear buttons. Do not preheat if welding on manganese surfaces regardless of air temperature.

Q: When to use a chocky bar?

A: As a replacement for hard facing augers, directional drill heads, foundation drilling, raise bore drilling
Buckets (excavator, loader, dragline, and face shovel)
Crusher spider arm guards
Discharge chutes
Rock boxes
Grizzly bars on feeders/shredder/grinding mills
Sugarcane knife edges
Adapters and attachments
Dredging equipment
Screen-feed distribution
Hopper wear areas

Q: How to choose chocky bars and wear buttons?

A: When choosing chocky bars and wear buttons, consider factors like material hardness, abrasion resistance, and compatibility with your equipment. Look for options that offer durability and longevity in the specific application environment. Consulting with suppliers or experts in the field can also provide valuable insights into selecting the most suitable chocky bars and wear buttons for your needs.

Q: What material is chocky bars?

A: The chocky bars are made from a bimetallic product which is produced by metallurgically bonding a highly alloyed chromium molybdenum white iron to a mild steel backing plate. The bonding process yields a high shear strength solution, making it a widely used material in most abrasive wear applications.

Q: What are chocky blocks made of?

A: Chocky Bars are a type of duplex wear plate that combines the extreme wear resistant qualities of a cast white iron, overlaid onto a shock-absorbing mild steel backing plate.

Q: What are wear strips and chocky bars of all sizes?

A: One of the key areas of cost and concern when it comes to maintenance of your earthmoving equipment is quick wearing. Using quality wear strips and chocky bars can give your equipment long-term wear and impact resistance. Save money and reduce future maintenance by equipping your machinery with wear strips or chocky bars to help prevent wear and provide protection on buckets for loaders and excavators.

Q: What are the advantages of chocky bars and wear buttons?

A: Some advantages of chocky bars and wear buttons include:
Abrasion Resistance: They provide excellent protection against abrasion, extending the lifespan of equipment.
Versatility: Chocky bars and wear buttons can be easily customized to fit various equipment and applications.
Easy Replacement: They can be quickly replaced when worn out, minimizing downtime.
Cost-Effective: Compared to replacing entire components, using chocky bars and wear buttons is often more cost-effective.
Enhanced Performance: They improve the performance of equipment by reducing wear and tear on critical parts.
Compatibility: Chocky bars and wear buttons are compatible with a wide range of materials and machinery.
Reduced Maintenance: By protecting against wear, they reduce the frequency of maintenance and repair needs.

Q: How to use chocky bars and wear buttons?

A: Using chocky bars and wear buttons involves the following steps:
Identification: Identify the areas of your equipment that are prone to wear and would benefit from the use of chocky bars and wear buttons.
Preparation: Clean the surface where the chocky bars or wear buttons will be installed to ensure proper adhesion.
Installation: Depending on the type of chocky bars or wear buttons, you may need to weld, bolt, or glue them onto the surface of the equipment.
Maintenance: Regularly inspect the chocky bars and wear buttons for signs of wear and replace them as needed to maintain optimal protection for your equipment.

Q: What is the lifespan of chocky bars and wear buttons?

A: The lifespan of chocky bars and wear buttons can vary depending on factors such as the material composition, application conditions, and maintenance practices. Generally, with proper care and maintenance, chocky bars and wear buttons can last anywhere from several months to several years. Regular inspections and prompt replacement when signs of wear are noticed can help maximize their lifespan and ensure continued protection for your equipment.

Q: What are the features of chocky bars and wear buttons?

A: Some features of chocky bars and wear buttons include:
Material Composition: They are typically made from abrasion-resistant materials such as chromium carbide or white iron.
Customization: Chocky bars and wear buttons can be customized in terms of size, shape, and thickness to fit various equipment and applications.
Mounting Options: They can be installed using various methods including welding, bolting, or gluing, providing flexibility in attachment.
Profile Varieties: Chocky bars and wear buttons come in different profiles, such as round, square, and rectangular, allowing for precise fitting and coverage.
Surface Treatment: Some variants may feature special surface treatments or coatings to enhance their wear resistance and performance in specific applications.

We're professional chocky bars and wear buttons manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy chocky bars and wear buttons at competitive price from our factory.

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