Ningbo, China, September 2026 – Harbin Rainbow Technology, a professional manufacturer specializing in R&D and production of cold forming equipment, officially launched its new generation of multi-station cold heading machine series. Covering 3-die 3-blow, 4-die 4-blow and 5-die 5-blow full configurations, the new product line targets the mass production of high-strength bolts, precision nuts and special-shaped fasteners, marking an important step for the company in promoting the high-end and intelligent upgrading of fastener manufacturing equipment.
Against the background of rapid development of global new energy vehicles, wind power equipment, high-end construction machinery and aerospace industries, the market demand for high-strength, high-precision and high-consistency fasteners continues to rise. Traditional single-station cold heading equipment has been difficult to meet the requirements of large-scale production in terms of production efficiency, forming accuracy and material utilization. As the core process equipment of fastener manufacturing, the performance of cold heading machines directly determines the quality level and production capacity of terminal fastener products. In this context, Harbin Rainbow Technology's new generation of multi-station cold heading machines came into being.
Different from traditional cold forming equipment, the new multi-station cold heading machine series adopts an integrally cast high-rigidity lathe bed made of high-quality cast steel, which has undergone secondary aging treatment to fully eliminate internal stress of the structure. It can maintain stable dimensional accuracy even under 24-hour continuous high-load operation, and the service life of the whole machine is increased by more than 30% compared with ordinary equipment.
Equipped with a precision forged crankshaft transmission system and a die positioning mechanism with micron-level adjustment accuracy, the equipment realizes one-time continuous forming of multiple processes such as material cutting, pre-forming, rough forming, fine forming and trimming. The forming tolerance of finished products is controlled within ±0.02mm, and the pass rate of primary processing exceeds 99%. The multi-station continuous forming process increases the production speed to 60-180 pieces per minute, which is 2-3 times that of traditional single-station equipment, and the material utilization rate exceeds 95%, which significantly saves raw material costs for manufacturing enterprises.
In terms of intelligent manufacturing upgrade, the whole series is equipped with a PLC intelligent control system and a 10-inch touch human-machine interface. Operators can complete the setting of production parameters, mold adjustment and production plan switching through visual operation, which greatly reduces the skill requirement for front-line workers. The system also has built-in functions such as real-time production data statistics, fault self-diagnosis and automatic alarm, which helps production managers grasp the equipment operation status in real time and improves the refined management level of the production line.
In addition, the equipment is equipped with a centralized automatic circulating lubrication system with an independent cooling module, which can accurately supply oil to each transmission part, reduce the wear of moving parts, and at the same time control the temperature rise of the equipment during long-term operation, further improving the stability of continuous production.
At present, this series of cold heading machines can be widely used in the production of hex bolts, flange bolts, carriage bolts, socket head cap screws, high-strength nuts and various special-shaped fasteners. It is compatible with carbon steel, alloy steel, stainless steel, copper alloy and other common metal materials, and can fully meet the production needs of downstream customers in different industries such as automobiles, wind power, construction, machinery and electronics.
According to the introduction of Harbin Rainbow Technology, for fastener manufacturers with different production scales and product positioning, the company can provide targeted equipment configuration schemes, and can also customize non-standard cold heading equipment and supporting production line solutions according to customers' special process requirements.
"For many years, Harbin Rainbow Technology has been focusing on the R&D and innovation of cold forming equipment, and has been deeply engaged in the process needs of the fastener industry." said the general manager of Harbin Rainbow Technology. "The launch of the new multi-station cold heading machine series is not only a breakthrough in our technical strength, but also a response to the global market's demand for high-efficiency and high-quality manufacturing equipment. In the future, we will continue to increase R&D investment, promote the green, intelligent and customized development of equipment, and help more fastener enterprises achieve production capacity upgrading and quality improvement."
It is reported that the new generation of multi-station cold heading machines has been fully put into mass production and accepts global orders. Harbin Rainbow Technology provides customers with full-cycle technical services including pre-sales process design, on-site installation and commissioning, operator skill training and lifetime after-sales technical support. With professional technical strength and rapid service response, the company has established cooperative relations with many fastener enterprises in Europe, America, Southeast Asia, the Middle East and other regions, and continues to provide reliable manufacturing equipment support for the global fastener industry.