Zhejiang Longhui Machinery Manufacturing Co., Ltd. - Cold Heading Machines specializes in multi-station models within its "Cold Heading Machines Equipment" line, offering options from one to seven molds to easily complete large-deformation "Cold Heading" forming. The equipment features a compact structure, high wear resistance, and is widely used in the efficient production of Screws and nuts in the automotive, hardware, and furniture industries. It also supports CNC variable frequency speed control, achieving both energy saving and increased production.

China·Zhejiang Longhui Machinery Manufacturing Co., Ltd.

Established in 1992, Wenzhou City Longhui Machinery Manufacturing Co., Ltd. is an enterprise specialized in machinery manufacturing. It has strong technologies and has gathered a batch of researchers engaged in production and R & D of nut formers for many years. It owns experienced and professional talents in management, processing processes, tooling, testing and a series of other processes and advanced Testing Equipment. It mainly produces 8B-41B Six-die cold heading forming machines and uses advanced and unique numerical control inverters to adjust the speed of the production of forging nuts. It has bearing-type high-speed nut Non-standard special forming machines (common type, extended type, super long type), and this equipment is characterized by compact structure, good wear resistance, high precision, convenient operation and maintenance and other advantages, which is mainly applied to automobiles, motorcycles, bicycles, architectural hardware, expansion anchors and other complex non-standard special parts. Processing materials include: mid-and-low-carbon copper, stainless steel low alloy steel, aluminum alloy, etc.

ADD: No.799 Nanming Road, Jingkai District, Lishui  City, Zhejiang Province

Tel：+86-578-2318667 / +86-13385888621  

E-mail: 305664804@qq.com

Walk into any modern standard parts production workshop, and you'll almost always hear a unique and rhythmic roar. That's the sound of metal colliding with molds under high pressure—the efficient operation of cold forging machines manufactured by Zhejiang Longhui Machinery Manufacturing Co., Ltd. Rolls of seemingly ordinary steel wire or alloy wire are fed into the mouths of these steel behemoths, and in just a brief moment, what rolls out of the outlet are already well-formed Bolts, nuts, or complex, irregularly shaped Fasteners. This almost magical transformation doesn't rely on cutting or grinding, but rather on a more ancient yet highly efficient metal forming process—cold forging.

Unlike common turning or milling, the core of cold forging lies in "shaPing" rather than "cutting." You can imagine pressing a soft dough into a mold to make a cookie, but Zhejiang Longhui's cold forging machines handle high-strength alloy steel or stainless steel. When the machine's punch strikes the end of the wire with tremendous force, the metal exhibits remarkable plasticity at room temperature, flowing and filling within a precision mold cavity like a tamed liquid, ultimately solidifying under high pressure into the desired shape. This chip-free machining method not only maximizes the preservation of raw materials and avoids the large amounts of waste generated by traditional cutting, but more importantly, through the work-hardening effect, the internal grain structure of the metal is rearranged, resulting in an exceptionally dense microstructure. This gives the finished fastener higher tensile strength and fatigue resistance than the raw material.

The cold heading machine manufactured by Zhejiang Longhui Machinery Manufacturing Co., Ltd. is typically a precision automated system integrating multiple processing stations. It resembles a miniature high-speed production line, where the wire, under precise clamping, passes through multiple stations sequentially, including cutting, pre-heading, forming, Punching, and trimming. At each station, specially designed carbide molds and high-speed punches work with micron-level precision. Any slight deviation can lead to the scrapping of the finished product. Therefore, the mechanical rigidity of the entire machine, the stability of the transmission system, and the reliability of the temperature control system have all undergone rigorous design and testing. A powerful main slide provides continuous and stable impact force, while an intelligent feeding mechanism ensures that each piece of wire is precisely positioned at the center of the die. Even in high-speed continuous production, this guarantees that the head contour of each bolt is clearly defined and every stress surface is smooth and flat.

These fasteners, mass-produced by Cold Heading Machines, constitute the most basic connection units in modern industry. In the automotive industry, they are high-strength engine bolts and chassis connectors, withstanding the intense vibrations and impacts of high-speed driving; in the construction field, they are anchors for steel structure nodes and fasteners for curtain walls, safeguarding the structural safety of skyscrapers; in the precision electronics industry, tiny screws produced by miniature cold heading machines tightly secure circuit boards to their casings, ensuring stable equipment operation; even in the aerospace field, which has extremely demanding material requirements, specially designed cold heading equipment processes high-temperature resistant, high-strength special alloy fasteners. It can be said that from everyday household appliances to high-speed trains, almost everywhere bolted connections rely on the silent labor of cold heading machines.

Zhejiang Longhui Machinery Manufacturing Co., Ltd., as a professional manufacturer with many years of experience in this field, deeply understands the essence of cold heading technology. They are not merely manufacturing machines, but providing a fundamental and stable foundation for the entire manufacturing industry. In their factory, the creation of each cold heading machine embodies a profound understanding of materials mechanics, mold design, and precision manufacturing. When these machines finally enter the customer's workshop and begin their tireless operation, they become the unsung heroes, transforming rolls of ordinary metal wire into a solid link supporting modern industrial civilization. In the rhythmic clanging sounds and the instantaneous flash of forming, there is the trajectory of metal and mechanics dancing together, and also Zhejiang Longhui Machinery Manufacturing Co., Ltd.'s most steadfast commitment to industrial quality.