How to choose the tonnage of pneumatic punch?

How to choose the tonnage of pneumatic punch? F=LT σ Bf

L refers to the length of the trimming line, which means that if a square hole is punched, its trimming line length is the sum of the four sides of the square hole, which is exactly its circumference.

T refers to the thickness of the material, which is the same as above. The unit is mm, and f is the punching coefficient, which is usually taken as 1.3

σ B refers to the tensile strength of stamped steel plate materials, which is necessary to refer to the manual available online.

The result obtained by multiplying the above several factors is the Ram pressure, but the unit is cow, and it takes 9800 to convert it into ton, so the basic tonnage is obtained. Then, considering the blanking stillness margin and the force required for other things such as unloading, pushing and jacking, the high-speed pneumatic punch divides this tonnage by 0.7, which is the tonnage of the machine tool.

The punishment method for dealing with the mirror bright appearance of stainless steel: Based on the large level of stainless steel products and the environmental differences that users need to discuss, machine polishing, chemical polishing, electrochemical polishing, etc. can be separately accepted to achieve the mirror light. The advantages and disadvantages of these three essentials are as follows: machine polishing, good leveling, and brightness. Labor intensity is high, pollution is severe, large pieces are difficult to process, and the cost and investment are high. Simplified workpieces, medium and small products, and bulky parts cannot be processed. The entire product cannot achieve equality in millisecond light, and the millisecond light connection time is not long.

Chemical polishing, low investment, capable of throwing large pieces, high compliance, and fast speed. Insufficient brightness, the polishing fluid needs to be heated, and there is gas escaping. Ventilation and equipment deployment are necessary. Large products with low brightness requirements can be selected. Small batch processing is more cost-effective.

Electrochemical polishing, achieving a mirror like finish, long-lasting connection, stable process, low pollution, low cost, and good anti pollution performance. The one-time investment is large, and bulky items require tooling and auxiliary electrodes, while mass production requires cooling. High grade small and medium-sized products require a bright mirror surface for permanent connection, stable product technology, easy operation, and can be widely promoted and utilized.