Cross Wedge Rolling Machine

Cross Wedge Rolling Machine
Cross Wedge Rolling
Cross Wedge Rolling Machine Manufacturer and supplier in China-Hongjie
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Zibo Hongjie Forging Industry Equipment : Your Trustworthy Cross Wedge Rolling Machine Manufacturer！

Zibo Hongjie Forging Industrial Equipment Co., Ltd. covers all aspects of the forging field, from the initial cutting and heating of the metal, to pre-forming and final forming, and subsequent trimming and marking, we are able to provide the appropriate equipment to support. Among these machines, roll forging machines and cross wedge rolling machines are our main products, they have solved pre-forming problems for more than 500 forging companies and enjoy a high reputation in the forging industry.

Rich variety of products

Our main products are roll forging machines and cross wedge rolling machine. In addition to these two main products, we also provide customers with a comprehensive range of forging related equipment, including circular saws, induction heating furnaces, electric screw presses, hot forging presses, trimming machine, etc.

Wide Range of Partners

Our customers are all over the world, in the domestic market, Juli Group, Dongfeng Motor Company and Weichai Power are our valuable customers, in the global market, we also establish good cooperation relationship with Kanca, Teknorot, Kems and other partners. We have been committing to providing professional forging equipment and solutions for forging enterprises all over the world.

Advanced Production Facilities

Our production base has several independent machining centers. Such as floor boring and milling machines, five-sided milling machining centers, CNC machining centers, drilling machines and large-scale CNC machining equipment. These advanced production and processing equipment able to meet the productivity requirements.

Wide Range of Applications

Our machines enjoy a diverse and extensive range of applications, catering to multiple industries and fulfilling a myriad of purposes, such as automotive parts, tools, electric hardware, rigging and construction machinery.

What is Cross Wedge Rolling Machine

Cross wedge rolling is that the heated billet is sent into the middle of two dies with wedge-shaped convex rotation in the same direction, and the billet is driven by the die for rotary movement in reverse with the die, while the material is radial compression deformation and axial extension deformation, so as to form the stepped shaft parts and etc.

Features of Cross Wedge Rolling Machine

Good Product Quality

Since the metal fibers of the cross-wedge rolling product remain continuous and the internal structure of the grains is refined and uniform, the mechanical performance of the Cross Wedge Rolling Machine can be improved by about 20%.

Save Raw Materials

Since the cross wedge rolled shaft parts are precision rolled, the machining allowance is small, 1-1.5 mm on one side, and the subsequent machining needs are even less, so the material utilization rate is higher than that of conventional forging.

High Automation Potential

Cross wedge rolling is a precision manufacturing process that can be easily integrated with automated systems. The consistency and repeatability of cross wedge rolling also reduces the need for manual interventions, manufacturers can optimize their production lines and improve efficiency and product quality by it.

Improved Material Properties

Compared with other metal forming methods such as traditional hammer, the cross wedge rolling process can better adjust the grain structure of the metal, thereby improving mechanical properties such as tensile strength and ductility.

Parts of Cross Wedge Rolling Machine

Frame
Provide stable support and fixtures to ensure the normal operation of the entire equipment.

Feeding System

Detects the incoming signal and automatically feeds the billet into the rolls for rolling.

Control System

The electrical control system is used to control the operation of the equipment, including adjust rollers, speed regulators, etc. Modern CWR machines may employ CNC or PLC (programmable logic controller) systems for precise control.

Drive System

It consists of electric motor, gear drive and transmission device to drive the movement of rolls to ensure the continuity and stability of rolling process.

Roller

Responsible for bearing the die, while the same direction of the roll movement drives the die to achieve accurate rolling of the billet.

Working Principle of Cross Wedge Rolling Machine

Material Feeding: The billet is automatically introduced into the working space between the rollers.

Rotation and Compression: The two rollers rotate in the same direction and drive the billet to rotate. While rotating, the die equipped on the roller will gradually compresses and rolls the billet, reducing its diameter and increasing its length.

Cutting and Separation: Cutter is installed after the rolling. Each time the roller rotates, one or a pair of products can be rolled. The function of the cutter is to cut off the material head or separate the paired rolled pieces into two pieces.

How to Choose Cross Wedge Rolling Machine

Eco Friendly Cross Wedge Rolling Machine

Cross Wedge Rolling Machine Replace Hammer

Material Type

Consider the physical properties of the material will be processing, the machine must be capable of handling the material's hardness, yield strength, and ductility.

Product Size

Drawing of the product is the most important factor to choose cross wedge rolling. Length, diameter and overall deformation amount of product shall be all considered to confirm a suitable cross wedge rolling model. We have experienced technician to help customer evaluate their product.

Product Shape and Tolerance

Determine the final shape and dimensions of the product. Cross wedge rolling can produce a variety of profiles, but the specifications of the machine must match the complexity of the requested part. Additionally, the tolerance required for the application should be considered as well.

Production Output

Assess the required production output, choose the cross wedge rolling which can meet the expected output but also has certain expansibility and economy at the same time.

Space Arrangement

Small foot space is one of the advantages of cross wedge rolling. According to customer’s forging line layout and cross wedge rolling exact foot space, make the correct space arrangement.

How to Install Cross Wedge Rolling Machine

All cross wedge rolling ship to customer are all in well integrated assemble and been through standard debugging test. Die is equipped on the roller so that customer can apply in production right the first time.

Unloading and Positioning

Carefully unload the machine from the delivery. Use lifting equipment like cranes and forklifts to move into position. Ensure there’re no damage during transport.

Assembly

Begin assembling the machine according to the manufacturer's guidelines.

No-load and Load Test Run

After the equipment is installed, the no-load test run is carried out to check the operation of the equipment and the coordination of various components. After the no-load test run is normal, the load test run is carried out. According to the production demand, adopt suitable materials for test run to check the quality of the rolled products and the stability of the equipment.

How to Use Cross Wedge Rolling Machine

Check The Machine

Before starting the equipment, check whether the components of the machine are in good condition, check the power and air source: ensure that the power supply voltage is stable and meets the requirements of the equipment, and check whether the compressed air source is sufficient. Additionally, be sure all the configuration is set right.

Feed

Connect with induction heating furnace, the billet will be fed automatically after heating.

Extract

After the rolling, the preform can be directly sent to next forging step by conveyer or by manual according to different forging process requested by customer.

Power Off

Before stopping, the main motor should be turned off, and then turn off the power and air source.

How to Maintain Cross Wedge Rolling Machine

Daily Inspection

Before and after each use, inspect the machine for any visible damage, such as dents, cracks, or excessive wear on the rollers and die. Check whether oil leaks and make sure all safety devices are working properly.

Lubricating

Lubricate all moving parts, including gears, bearings, etc. Proper lubrication can reduces wear and prevents corrosion.

Die Changing

Check the die for wear and replace if necessary.

Electrical System Inspection

Check electrical connections and components for any signs of wear or damage. Make sure all wiring is tight and free of corrosion. Replace damaged parts promptly to avoid system failure.

Clean

Keep the machine clean by removing metal shavings and debris that accumulate during operation. Wipe down exterior surfaces and use compressed air to blow out hard to reach areas.

Certificate

Frequently Asked Questions

Q: What is Cross wedge Rolling Machine?

A: A Cross Wedge Rolling Machine is a specialized type of rolling mill used for producing cylindrical parts, such as shafts, tubes, and bars, with varying cross-sections along their length. It operates on the principle of upsetting and elongating the workpiece simultaneously by the application of lateral forces.

Q: What are the main advantages of cross wedge rolling?

A: The main advantages include improved material properties due to work hardening, lower production costs compared to extrusion, and the ability to produce complex cross-sections with high precision.

Q: What types of metals can be processed using Cross wedge Rolling Machine?

A: Cross Wedge Rolling (CWR) machines can process a wide range of metals, including carbon and alloy steels, stainless steels, aluminum, copper, and titanium alloys. The choice of metal depends on the specific requirements of the application, such as strength, ductility, corrosion resistance, and weight. Carbon and alloy steels are commonly used for their high strength and durability, while stainless steels are chosen for their resistance to corrosion. Aluminum and copper alloys are popular for their lightweight and electrical conductivity, respectively. Titanium alloys are used for their high strength-to-weight ratio and corrosion resistance, particularly in aerospace and medical applications. The suitability of a metal for CWR also depends on its ability to deform plastically at the required process temperatures, which can vary depending on the metal's melting point and other physical properties.

Q: How is the size of the final product determined in Cross wedge Rolling Machine?

A: The size of the final product in Cross Wedge Rolling (CWR) is determined by the initial dimensions of the billet, the die angles, and the extent of material deformation achieved during the rolling process. The die are designed with specific angles that gradually reduce the cross-sectional area of the billet as it is passed through the rollers. The reduction ratio, which is the ratio of the initial cross-sectional area of the billet to the final cross-sectional area of the part, is calculated based on the desired dimensions of the finished product.

Q: What are the typical applications of parts made by Cross wedge Rolling Machine?

A: Automotive industry: CWR is used to manufacture drive shafts, axles and other components that require high strength and toughness. Aerospace industry: Aircraft manufacturers use CWR-machined parts for engine components, landing gear and fuselage frames, where weight reduction is critical. Rail Industry: Rails, wheels and axles are often produced by CWR to ensure durability and performance under heavy loads. Construction Industry: Steel bars, pipes and structural elements benefit from the high precision and strength provided by CWR.

Q: What is the role of temperature in the Cross Wedge Rolling Machine process?

A: Reduced work hardening: As temperature increases, the tendency for work hardening (increase in hardness and strength due to plastic deformation) decreases. This is beneficial as it reduces the risk of crack formation during rolling. Material flow: Higher temperatures promote better flow of metal between the die, resulting in a more uniformly shaped product. If the process involves molds, it can also improve filling of the mold cavity.

Q: Can Cross Wedge Rolling produce non-axisymmetric shapes?

A: Yes, Cross Wedge Rolling (CWR) is capable of producing non-axisymmetric shapes. The versatility of the CWR process allows for the creation of a wide variety of profiles, including I-beams, channels, angles, and custom-designed geometries. This is achieved by using specially designed dies or by manipulating the relative positions of the die and the workpiece.

Q: What is the difference between Cross wedge Rolling Machine and conventional rolling processes?

A: Unlike conventional rolling, which typically involves rolling between rolls of the same diameter, CWR uses intersecting wedges to progressively reduce the billet's cross-sectional area.

Q: What is the significance of die geometry in Cross Wedge Rolling Machine?

A: The wedge geometry in a Cross Wedge Rolling (CWR) machine is significant because it directly influences the shaping and deformation of the workpiece. The wedges are typically composed of a pair of inclined planes that come together at a sharp angle.

Q: How does Cross wedge Rolling compare with extrusion in terms of cost and efficiency?

A: Initial Setup: Extrusion typically has a higher initial cost due to the need for an extruder, die, and maintenance. The initial set-up cost of a CWR is likely to be lower as it can use simpler equipment, although this may vary depending on the size of the operation and the complexity of the parts being manufactured. Tooling Cost: Extrusion dies can be expensive, especially for complex designs. CWR molds may cost less, but again this depends on the complexity of the design.

Q: Is Cross wedge Rolling a continuous or batch process?

A: Cross Wedge Rolling (CWR) is generally considered a batch process rather than a continuous one. In CWR, individual billets or workpieces are fed into the rolling mill one at a time, and they pass through the wedges only once to achieve the desired shape. This contrasts with continuous processes like extrusion, where the material is fed into the die and continuously extruded to form a stream of parts.

Q: What factors determine the quality of parts produced by Cross wedge Rolling Machine?

A: Material quality: The chemical composition and purity of the starting materials are critical. Defects or inconsistencies in the blank can cause part defects. Blank Preparation: The condition of the blank (such as surface defects, internal porosity, and grain structure) affects the quality of the finished part. Proper preheating and homogenization help improve billet quality.

Q: Can cross wedge rolling mills be automated?

A: Cross Wedge Rolling (CWR) mills can indeed be automated to a significant extent. Automation in CWR involves the integration of sensors, control systems, and robotic handling to optimize the rolling process, enhance productivity, and maintain consistent part quality.

Q: What are the challenges associated with operating a Cross wedge Rolling Machine?

A: Material preparation: The initial blank needs to be of consistent quality with minimal defects. Any impurities or inconsistencies can lead to defects in the final product. Temperature Control: Maintaining the correct temperature throughout the rolling process is critical. Overheating can cause grain coarsening, while overheating can lead to insufficient plastic deformation. Wedge Alignment and Maintenance: Ensuring precise wedge alignment is critical to achieving the desired shape and size. Wedge wear must be regularly monitored and addressed to prevent dimensional inaccuracies. Load Management: Applying the right amount of force is critical to successful rolling. Too much force can cause the material to crack or tear, while too little force can result in incomplete molding.

Q: How is the Cross wedge Rolling Machine process controlled during operation?

A: Mechanical setup: Before the operation begins, the wedge angle, roll gap and other physical parameters are set according to the required dimensions of the final product. These settings can be adjusted manually or automatically depending on the machine's capabilities. Heating control: Use heating elements and thermocouples to control the temperature of the workpiece. The temperature must be within a specific range to ensure proper plastic deformation and avoid material damage. Force and Pressure Control: The hydraulic or mechanical system that applies pressure to the wedge is calibrated and controlled. The force must be monitored to ensure it is sufficient to deform the material without causing cracks or other defects. Speed control: Adjust the speed of the wedge to control the deformation rate. This is important to maintain an even flow and prevent defects such as seams or voids from forming. Lubrication system: An automatic lubrication system ensures adequate lubricant is applied to reduce friction and wear. The amount and frequency of lubrication can be adjusted according to the material being processed and the operating conditions.

Q: What is the typical output capacity of a Cross Wedge Rolling Machine?

A: The output capacity of a Cross Wedge Rolling (CWR) machine can vary widely depending on several factors, including the size and power of the machine, the type and thickness of the materials being rolled, the complexity of the part shapes, and the production rate required.

Q: Can Cross wedge Rolling machines be used for hot and cold working?

A: Cross Wedge Rolling (CWR) machines are primarily designed for hot working processes. The process typically involves heating the billet to a high temperature, usually above the material's recrystallization temperature, to achieve the necessary ductility for deformation. Heating the material facilitates the plastic flow, allowing the wedges to shape the billet into desired profiles with less applied force compared to cold working.

Q: What is the importance of lubrication in Cross Wedge Rolling Machine?

A: Reduce friction: Adequate lubrication reduces friction between the moving parts of the machine and the workpiece. The reduction in friction is critical as it minimizes the force required to deform the material, thereby saving energy and increasing operational efficiency. Extended tool life: Lubrication reduces direct metal-to-metal contact by providing a protective film between the tool and workpiece. This significantly reduces tool wear and extends the service life of wedges, dies and other components, thereby reducing maintenance costs and downtime.

Q: How is the surface finish of parts produced by Cross Wedge Rolling Machine?

A: The surface finish of parts produced by CWR is generally good due to the smooth action of the wedges. However, it can be further enhanced through subsequent finishing processes if required.

Q: What are the safety considerations when operating a Cross Wedge Rolling Machine?

A: Safety considerations include ensuring proper guarding, using personal protective equipment, maintaining clearances to prevent injury from moving parts, and adhering to lockout/tagout procedures during maintenance.

As one of the most professional cross wedge rolling machine manufacturers and suppliers in China, we're featured by quality products and competitive price. Please rest assured to buy cross wedge rolling machine for sale here from our factory.

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