As a leading manufacturer of crawler crane undercarriage parts, we have always been committed to providing our customers with high quality and reliable products. As an important part of crawler crane chassis, we strictly control the quality during the production process to ensure the stable and reliable performance of our products. Below is the introduction of our production process of track roller.

a. Cutting: Firstly, a metal blank of the required size is cut from the raw material.

b. Forging: The metal blank is forged to increase its density and strength to form the initial shape of the track roller.

c. Tempering: Heat treatment of the track roller to improve its mechanical properties and wear resistance.

d. Rough machining: Rough machining of the heat-treated track roller to achieve the shape and size required by the design.

e. HB testing: Hardness testing is carried out to ensure that the rollers meets the required hardness criteria.

f. Half finished machining: Half finished machining is carried out to dress and finish the surface of the roller.

g. Quenching: Hardening is carried out to increase the hardness and wear resistance of the counterweight roller.

h. Finished machining: Final machining of the track roller to ensure that it meets the requirements of precision.

i. Cleaning: Cleaning the surface of the track roller to ensure the quality and appearance of the product.

j. Assembling: assembling the parts together to complete the assembly of the roller.

k. Packaging: Packaging the finished roller for transport and use.

Through these production steps, we can ensure the production of high quality and durable crawler crane track roller to meet the customer's demand for product performance and quality.

A. When referring to the cutting process, the following steps are usually involved:

1.Material Preparation: Firstly, the raw material needs to be prepared to ensure that it meets the size and quality standards required by the design.

2. Design and planning: before cutting can take place, the size and shape of the cut required needs to be determined based on the design requirements and drawing specifications of the product.

3. Selection of cutting method: According to the type and requirements of the material, select the appropriate cutting method, such as flame cutting, plasma cutting, laser cutting, water cutting, etc.

4. equipment preparation: according to the selected cutting method, prepare the corresponding cutting equipment, ensure that the equipment operates normally and carry out the necessary maintenance.

5. Safety measures: when carrying out cutting operations, we must strictly abide by the safety regulations, wear personal protective equipment to ensure the safety of the operating environment and operators.

6. Cutting operation: According to the design requirements and drawing specifications, carry out the cutting operation to ensure that the cutting is carried out in accordance with the exact size and shape to ensure the quality and precision of the material.

7. Inspection and trimming: After completing the cutting, inspect the cut workpiece to ensure that the cutting surface is flat and free from cracks and deformation.

B. The track roller is an important part of a railway vehicle and is usually made of cast or forged steel. The following are the general steps of support wheel forging:

1.Design and planning: According to the design requirements and technical standards of the track roller, determine the required size, shape and material selection.

2.Heating material: Heat the steel to a suitable temperature to give it good plasticity for subsequent forging operation.

3.Forging operation: The forging operation is carried out on the heated steel, usually using large forging equipment such as hammers or hydraulic presses. By applying pressure to the metal material, it is plastically deformed in a mould to obtain a track roller of the required shape and size.

C. Heat treatment of Track roller is a very important step, which can help track roller to get good mechanical properties and durability. The heat treatment process of track roller usually includes tempering, normalising and quenching.

1. Tempering: After the forging of the track roller is completed, it is usually tempered. Tempering is done by heating and holding for a certain period of time, and then cooling in order to reduce the internal stresses generated by forging and to improve the toughness and plasticity of the track roller. The tempering temperature, time and cooling rate will vary according to the type of material used and the technical requirements of the track roller.

2. Normalising: Normalising is another important step in the heat treatment of track roller. Normalising is done by heating the roller to a suitable temperature, then keeping it at that temperature for a certain period of time and finally cooling it properly. Normalising improves the hardness and strength of the counterweight wheel, giving it better wear and compression resistance.

3. Hardening: After normalising, the counterweight roller may be hardened. Quenching is the process of heating a counterweight wheel to a critical temperature and then cooling it rapidly in order to cause a phase change in its organisation, resulting in high hardness and strength. Quenched track roller usually have excellent wear resistance and fatigue resistance.

D. Rough machining of track roller is a very critical step in the production process of track roller, which can lay a good foundation for the subsequent processing and heat treatment of supporting wheel. Rough machining of supporting wheel usually includes the following main steps.

1. Billet preform: Next, the billet usually needs to go through the preform process, through which the shape and structure of the supporting wheel can be formed initially, including the initial shaping of the wheel ring and body.

2. Rough Turning: After preforming, the counterweight wheel usually needs to be rough turned, through which the surface roughness of the billet can be reduced, and at the same time, the size and shape of the counterweight wheel can be more accurate and in accordance with the design requirements.

3. Drilling: The wheel is usually drilled during the rough machining stage in order to mount the wheel on the appropriate machinery and equipment, and also to provide a basis for positioning and fixing for subsequent machining processes.

E. The hardness test of the track roller is a very important step in the production process of the supporting wheel, which can ensure that the hardness of the material of the supporting wheel meets the design requirements, so as to ensure that the supporting wheel has sufficient strength and wear resistance in the process of use. The hardness test usually includes the following common methods.

1. Ordinary Vickers hardness test: This is a common hardness test method, by applying a certain load on the surface of the supporting wheel, and then measuring the diameter or depth of the resulting indentation, so as to obtain the hardness value of the surface of the supporting wheel. Ordinary Vickers hardness test is applicable to the hardness test of most metal materials.

2. Brinell hardness test: Brinell hardness test is also a commonly used hardness test method, it is applied to the surface of the supporting wheel by a certain load, and then measure the diameter or depth of the resulting indentation, so as to obtain the hardness value of the surface of the supporting wheel. Unlike the Vickers hardness test, the Brinell hardness test uses different indenters and loads, and is suitable for testing materials with different hardness ranges.

In addition to the hardness test, the production process of the supporting wheel will also carry out magnetic particle flaw detection, ultrasonic testing and other tests to ensure the quality and safety of the supporting wheel.

F. The track roller usually needs surface treatment, including sandblasting, shot blasting, plating and other processes, to improve the corrosion resistance and surface finish of the track roller.

G. Precision machining of track roller is a very important part of the production process and involves a variety of processes and techniques to ensure the accuracy, durability and performance of track rollers. The following is the general process for precision machining of track rollers:

1. Precision Milling: Precision milling is carried out by CNC machine tools to machine the profile of the support wheel, axle holes, etc. This requires a high precision milling process. This requires a high precision milling process to ensure that the geometric and dimensional accuracy of the wheel meets the design requirements.

2. Drilling and machining of bores: track roller usually require the machining of axle bores and other internal bores. This includes drilling, reaming and other processes to ensure that bearings and other components are accurately fitted to the roller.

3. Precision Cutting: During precision machining, cutting processes may be required to ensure the balance and dimensional accuracy of the support wheel. This may involve cutting excess material or shaping the rim.

4. Surface Treatment: The surface of the support wheel requires precision treatment, including grinding and polishing processes, to ensure surface finish and accuracy, as well as to improve corrosion resistance and aesthetics.

5.Inspection and adjustment: After precision machining is completed, strict quality inspection is required to ensure that the size, geometry and surface quality of the supporting wheel meet the design requirements. Meanwhile some key dimensions may need to be adjusted to ensure the balance and stability of the roller.

H.The process of assembling the track roller of a crawler crane usually includes the following steps:

1. Preparation of parts: Various parts are procured from suppliers or produced in-house. These parts may include the support wheel body, bearings, axles, bolts, nuts, etc. Before assembly begins, these parts need to be inspected to ensure that they are of acceptable quality and that the surfaces of the parts are cleaned.

2. Axle Installation: First, install the axle and bearings on the support wheel body. This usually requires the use of specialised equipment to ensure that the axle and bearings are correctly fitted to the support wheel and are able to rotate freely and remain balanced.

3. Bolts and Nuts Installation: Bolts and nuts are installed on the support wheel and pre-tensioned according to design requirements. These bolts and nuts are usually used to connect the support wheel to other parts of the crawler crane, such as the tracks and the undercarriage.

4. Track Installation: Assembling the tracks onto the support sheave. This may require the use of special tools and equipment to ensure that the tracks are correctly fitted to the support sheave and are able to rotate freely.

5. Quality Inspection: After assembly, a quality inspection of the track roller is required. This may include checks on dimensions, rotational performance, equalisation and cosmetic quality.

6. Adjustment and testing: If problems are found with the track roller during the quality inspection, adjustments may need to be made. Once the track roller has passed quality inspection, additional testing may be required to ensure that it functions and performs as designed.

I. The painting process of supporting wheel for crawler crane undercarriage parts can be divided into the following steps:

1. Surface treatment: Firstly, the supporting wheel is cleaned and polished to ensure that the surface is free from oil, rust and impurities. This step is very important, because a good surface treatment can ensure the adhesion and flatness of the coating after painting.

2. Primer spraying: After the surface treatment, the track roller will be sprayed with primer. The primer can provide good adhesion and anti-rust and anti-corrosion function, which can help to protect the metal surface of the track roller from the external environment.

3. Drying: After the primer has been applied, the wheel is dried to ensure that the primer is fully cured and forms a strong base layer.

4. Topcoat spraying: Finally, the track roller is sprayed with topcoat, which is generally bright in colour and high in gloss, which is not only aesthetically pleasing, but also provides a certain degree of corrosion and oxidation resistance.

5. Drying and quality inspection: after the completion of spraying paint on the track roller, it will be dried to ensure that the paint film is fully dry. Then quality inspection will be carried out to check the flatness, adhesion and colour of the paint film to ensure that the quality of the spray paint meets the standard requirements.

Through careful material selection, strict processing technology and rigorous quality inspection, our Crawler Crane Undercarriage Parts Track Roller guarantees outstanding performance and reliability. We will continue to work hard to provide customers with better quality products and services.

If you have any needs about crawler crane undercarriage parts, please feel free to contact us.

Mail: info@crawlercranesparts.com

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