Advantages and Disadvantages of Totally Enclosed Cold Formers

Totally Closed Cold Forging Machine, as a specialized equipment for mass production of nuts, bolts and other fasteners, has a series of advantages and disadvantages. The following is a detailed analysis of its advantages and disadvantages:

Advantages
Economical and efficient:

Cold heading machine is more economical and efficient than ordinary cutting machinery, which can greatly reduce the production cost and improve the production efficiency.
It uses the mold to exert pressure on the metal blank directly at room temperature, so that it produces plastic change in the mold cavity, thus molding, this kind of molding processing method has high production efficiency and smooth production effect, which can produce high quality products.
High processing precision:

The working surface of cold heading molding process has good finish and high precision, which can produce high quality products.
As the metal fiber of the cold heading processed products will not be cut off, the internal structure of the metal is compacted, as well as the existence of the accompanying work-hardening phenomenon, so the mechanical properties of the metal are improved, such as the tensile strength is increased by about 10% compared with the cutting process.
High material utilization:

Cold heading process can significantly improve the material utilization rate. For example, the material utilization rate of cold heading bolts can be more than 99%, while the cutting process is only 40%.
The material utilization rate of cold heading nut can be about 80%, which is much higher than 54% of cutting process.
Reduce waste and energy consumption:

Cold heading process does not produce a lot of waste materials in processing, which can effectively utilize raw materials and reduce the waste of raw materials1.
At the same time, cold heading process can replace warm heading process, saving labor cost and energy loss.
Safe and reliable:

Modern cold heading machine is usually equipped with fault detector and safety protection device, which will automatically stop the machine when it fails, giving maximum protection to the equipment and molds.
The lubricating oil circuit design is simple and efficient, which can effectively protect the punching rod and workpiece.
Wide range of application:

Cold heading process is suitable for the production of large batch and various kinds of specifications, which can reduce the cost.
It is widely used in manufacturing steel, bolts, screws, nuts, threaded pipes, machine tools, automobiles and other fields.
Disadvantages
The molds are complicated and easy to wear:

The molds required for cold heading machine processing are complex and difficult to manufacture.
The molds need to be replaced when they wear out, which is expensive.
Limited processing of high hardness materials:

When processing high hardness materials, the cold heading machine will be subjected to great impact load, which is easy to cause damage and more difficult to maintain.
High operation safety requirement:

The speed of cold heading machine is fast, improper operation can easily cause personal injury.
Therefore, you need to pay attention to the safety when operating the cold heading machine, and shall not adjust and change the structure of the machine without authorization.
To summarize, the fully closed cold heading machine has significant advantages in machinery manufacturing, especially in the production of standard fasteners, but there are some disadvantages that need to be paid attention to. When it is used, it should give full play to its advantages, and at the same time, take corresponding measures to overcome its shortcomings, so as to ensure the safety, high efficiency and high quality of production.