Hard metal cutting method and device

Abstract

The invention discloses a hard metal cutting method. The hard metal cutting method comprises the steps that a cathode head and a workpiece are provided, a water spray hole is formed in the cathode head, and the cathode head is placed at the 0.1-0.3mm position above the desired hole opening position of the workpiece; the cathode head is connected with a direct current power anode, and the workpieceis connected with a current power cathode; and treatment liquid is sprayed from a spray hole to the surface, to be cut, of the workpiece, a chemical reaction is generated by the surface, to be cut, of the workpiece and the treatment liquid, the high-speed flowing treatment fluid takes away reactant, the position of the cathode head or / and the workpiece is adjusted according to the reaction speedat the surface, to be cut, of the workpiece, and the distance between the cathode head and the surface to be cut of the workpiece is maintained to be 0.1-0.3mm until the surface to be cut reaches a preset depth. The hard metal cutting method has high efficiency in hard metal cutting, and processing cost is low.

Description

technical field [0001] The present application relates to the field of metal processing, in particular to a hard metal cutting method and equipment. Background technique [0002] At present, mobile terminal casings such as mobile phones generally use light metal alloys such as magnesium or aluminum as the casing. Such magnesium or aluminum alloys have low hardness. During the processing process, forging or die-casting is generally used, and then CNC cutting is used for finishing. With the development of the mobile phone market, the requirements for the texture and hardness of the shell are increasing. At present, superhard materials such as stainless steel are used as mobile phone casings in the market, but the processing of superhard materials such as stainless steel is very difficult, requiring more tools and longer time for processing. [0003] Moreover, to process the back shell or middle frame of a mobile phone from a rectangular parallelepiped blank, it is necessary t...

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Problems solved by technology

At present, superhard materials such as stainless steel are used as mobile phone casings in the market, but the processing of superhard materials such as stainless steel is very difficult, requiring more tools and longer time for processing

[0003] Moreover, to process the back shell or middle frame of a mobile phone from a rectangular parallelepiped blank, it is necessary to remove the middle part of the blank, and the use of CNC processing method will greatly consume tools, time, and machines, and the processing cost is doubled compared with ordinary soft metals. increase

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