Excellent for cold heading and lathe parts
In the fastener forming process, the cold heading (crushing) technology is a main processing technology.
Cold rolling (squeezing) belongs to the category of metal pressure processing. In production, at room temperature, an external force is applied to the metal to form the metal in a predetermined mold, which is usually called cold rolling. In fact, the formation of any fastener is not only a cold deformation method, but also in the process of cold heading, in addition to upsetting deformation, it is accompanied by positive and negative extrusion, composite extrusion, and die cutting. , rolling and other deformation methods. Therefore, the name of coldness in production is just a habitual name. More precisely, it should be called cold squeezing. Cold rolling (squeezing) has many advantages, and it is suitable for mass production of fasteners.
There is also a machining process lathe, which, as the name implies, is a product that is machined from a lathe. Lathe parts can be divided into many types according to the type of lathe. The most common ones are automatic lathe parts, CNC lathe parts, and instrument lathe parts. The hardware materials used for lathe parts are copper, iron, aluminum, stainless steel, etc.
Lathe parts are widely used in electronics, hardware, toys, plastics and other industries. Compared with other solid parts, its main features are precision, and the tolerance can reach 0.01mm or even more accurately. Of course, the price is relatively higher than other solid parts. Due to the expensive machine and low processing efficiency, the processing cost is relatively high.
The reason why the lathe parts are processed more expensive than other hardware parts is determined by the turning process, high precision, low speed and low output. After a large part of the lathe parts are machined on the machine, it needs secondary processing to meet the functional requirements. Nowadays, the lathe parts process is rarely used in the fastening industry because it has low output and high cost, and is not suitable for the factory. Production, and vice versa, uses a cold heading process.
Why is the cold heading process superior to the lathe parts? The cold heading process has the following advantages:
1. High steel utilization rate. Cold heading (squeezing) is a kind of small, non-cutting processing method, such as hex head bolts for machined rods and hexagon socket head cap screws. The cutting method is used, and the steel utilization rate is only 25% to 35%. (Extrusion) method, its utilization rate can be as high as 85% to 95%, only the process consumption of the material head, the tail and the hex head.
2. Good mechanical properties. Parts processed by the cold heading (squeezing) method are much more powerful than cutting because the metal fibers are not cut.
3. High productivity. The cold heading (crushing) forming efficiency is several dozen times higher than that of the general cutting process.
4. Suitable for automated production. The fasteners (including some special-shaped parts) which are suitable for cold heading (squeezing) method are basically symmetrical parts and are suitable for high-speed automatic cold heading machine production, and are also the main method of mass production. In short, the cold heading (squeezing) method of processing fasteners and shaped parts is a processing method with relatively high comprehensive economic benefits. It is a commonly used processing method in the fastener industry, and is also widely used at home and abroad. Very advanced and advanced processing methods.
Deshengrui Machinery is a professional CNC manufacturing and Sheet metal fabrication company, including CNC machining services, CNC turning service, CNC milling services, CNC drilling services, laser cutting services, stamping services, Die casting service, iron casting service and Steel Forging service.