Trimetal Composite Contact Cold Header can make six different metals be compounded together under cold state to produce composite contacts according to the technique requirements. Its working process includes the following steps: Sending two different kinds of metal wire into the machine firstly, transmitting them into the mould after being cut off. Then by two times upsetting process, the two kinds of metal become the composite contacts. Finally, the products retreat from the mould and enter into the finished product box.

Product Overview

Our two-axis thread rolling machine is a professional heavy-duty cold forming equipment dedicated to high-precision and high-strength thread processing. Adopting advanced two-die synchronous extrusion technology, it forms threads through cold plastic deformation of metal without cutting chips. Compared with traditional thread cutting process, it greatly improves the surface finish, dimensional accuracy, tensile strength and fatigue resistance of finished threads, and is widely used in manufacturing high-grade fasteners and structural parts.

Core Advantages

1. High Precision & Consistent Forming Quality The two-die synchronous rolling structure ensures uniform and stable extrusion force, producing full, smooth and standard thread profile with high pitch accuracy. Batch processed workpieces have excellent consistency, which fully meets the quality requirements of high-strength standard parts and precision mechanical components.
2. Heavy-Duty Rigid Structure, Long Service Life The whole machine adopts integral cast iron fuselage with excellent rigidity and shock absorption performance. It maintains stable operation with low vibration and low noise even under long-time heavy load working conditions, effectively reducing equipment wear and prolonging the service life of both the machine body and thread dies.
3. Intelligent Control, Easy to Operate Equipped with PLC control system and intuitive touch screen interface, operators can easily set and adjust rolling pressure, feeding stroke and production rhythm. Built-in fault self-diagnosis and parameter memory function reduce operation difficulty and downtime, and help improve overall production efficiency.
4. Strong Material & Process Adaptability It is suitable for thread processing of various metal materials including carbon steel, alloy steel, stainless steel, copper and aluminum. By replacing different thread dies, the machine can produce metric threads, inch threads, trapezoidal threads and knurling patterns, satisfying diversified demands for both standard and customized non-standard workpieces.

Application Fields

This two-die thread rolling machine is widely applied in fastener manufacturing, automobile parts, construction machinery, bridge hardware, electric power fittings and other industries. It is an ideal choice for producing high-strength hex bolts, stud bolts, threaded rods, anchor bolts and other high-requirement threaded products.

Service & Support

We provide a 12-month whole-machine warranty, lifelong technical consultation and original spare parts supply. Every machine undergoes strict no-load and load testing before delivery. We offer free remote guidance for installation, debugging and operator training, and on-site service by professional technicians is also available upon request.

Rainbow full production of Spring washer making machine. we have all sizes equipment for 3mm, up to above 33mm spring washers.

Free design,Provide quotation list, process chart, lay out drawing, video to see more details
We have specialized in surface treatment equipment for more than 30 years
 

High speed nut former, nut making machine,nut forging machine to make hex,flange, nylock nut and special nut parts.

High speed nut former, nut making machine,nut forging machine to make hex,flange, nylock nut and special nut parts.

Place of Origin: China
Application: Machinery & Hardware & Others
Condition: New
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: One Year
Brand Name: Rainbow
Voltage: 380V
Warranty: One Year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Other.
Packaging Details: Plywood Cases

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China. We have invested one Cold former factory(Ningbo), one Thread rolling machine factory(Ningbo), one Heat treatment furnace factory(Suqian) and one Electro plating equipment factory(Wuxi).

We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world, With our reputation increasing and our team becoming more professional, we have experienced a significant growth in business during the recent years.

Nowadays, more and more reputed companies compete in a long-term cooperation with us.We abide by the principles of honesty, credibility, and mutual-benefit. Our motto is “ONCE BUSINESS, FOREVER FRIENDS”, we will do our best to serve clients at home and abroad. Due to our top-notch professional knowledge and rich trad experience, we have seen our market developing ability and actual business growth with an increasingly faster pace. We sincerely look forward to working with you. Let's build a great future together!

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China.
We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world.

This automatic cold heading machine is specially designed for mass production of screw and bolt heads. Adopting one-die two-blow forming process, it delivers stable heading precision, high production efficiency and low failure rate. Suitable for processing carbon steel, stainless steel and alloy steel wires, it is widely used in fastener manufacturing plants for various standard and custom fastener head forming

This automatic continuous quenching furnace is specially designed for batch heat treatment of fasteners and small metal parts. It adopts mesh belt continuous transmission structure to realize automatic feeding, heating, quenching and discharging in one continuous process. With precise PID temperature control and uniform heating zone design, it ensures stable hardness and consistent quality of workpieces, and is an essential supporting equipment for fastener production lines.

This high-performance automatic thread rolling machine is specially engineered for cold forming external threads on bolts, screws, studs, pins and other fastener workpieces. Adopting a 3-die cylindrical rolling structure, it produces precise, smooth and high-strength threads with no chip generation, greatly improving material utilization and production efficiency. It is an ideal core equipment for fastener manufacturing plants, hardware processing workshops and automotive component factories.

This cold heading machine (heading machine) is specialized equipment for fastener head cold forging. It cuts steel wire and forms screw/bolt heads in one station. Widely used for manufacturing standard and non-standard fasteners. Our machine adopts one die two blow structure, featuring high efficiency, stable performance and long service life. It is the core equipment matched with thread rolling machine to complete full screw production line.

Various types of thread rolling machine to meet your various needs.

Various types of thread rolling machine to meet your various needs.

Various types of thread rolling machine to meet your various needs.

Place of Origin: China
Application: Machinery & Hardware & Others
Condition: New
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: One Year
Brand Name: Rainbow
Voltage: 380V
Warranty: One Year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Other.
Packaging Details: Plywood Cases

Place of Origin: China
Application: Machinery & Hardware & Others
Condition: New
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: One Year
Brand Name: Rainbow
Voltage: 380V
Warranty: One Year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Other.
Packaging Details: Plywood Cases

Place of Origin: China
Application: Machinery & Hardware & Others
Condition: New
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: One Year
Brand Name: Rainbow
Voltage: 380V
Warranty: One Year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Other.
Packaging Details: Plywood Cases

Our automatic nut making machine adopts robust frame structure to realize nut cold forming. It can produce various nuts with high consistency. Simple operation and long service life, perfect for fastener manufacturing plants.

Our automatic nut making machine adopts robust frame structure to realize nut cold forming. It can produce various nuts with high consistency. Simple operation and long service life, perfect for fastener manufacturing plants.

Our automatic nut making machine adopts robust frame structure to realize nut cold forming. It can produce various nuts with high consistency. Simple operation and long service life, perfect for fastener manufacturing plants.

Various types of thread rolling machine to meet your various needs.

Various types of thread rolling machine to meet your various needs.