Film coating method of milling cutter
A milling cutter and plating technology, applied in the direction of gaseous chemical plating, metal material coating process, coating, etc., can solve the problems of high brittleness, tool matrix damage, easy wear, etc., and achieve improved hardness, performance, and process simple effect
Inactive Publication Date: 2018-03-23
无锡市锦润合金工具有限公司
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Problems solved by technology
[0002] At present, milling cutters generally have the problems of low bending strength, poor impact toughness, high brittleness and easy wear. In order to solve the above problems, most milling cutters are coated.
In the prior art, the chemical phase deposition method is generally used for diamond coating, because the milling cutter generally contains 6-8% cobalt, and the precipitation of cobalt leads to difficulty in film formation or poor film adhesion. To solve this problem, the main measures are Removal of cobalt in the milling cutter material, that is, removing cobalt by chemical method, but this method destroys the matrix composition of the milling cutter, the tool matrix is greatly damaged, and the strength of the cutter body is reduced. Even if it can be coated with diamond, it is meaningless very big
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[0011] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. , the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
[0012] A kind of coating method of milling cutter provided by the invention, concrete steps are as follows:
[0013] 1) A transition layer of titanium carbide and chromium carbide is plated on the surface of the milling cutter as a transition layer for diamond coating;
[0014] 2) After the milling cutter is cleaned and dehydrated with acetone, it is placed in the vacuum chamber of the chemical vapor deposition diamond growth equipment;
[0015] 3) ...
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Abstract
The invention provides a film coating method of a milling cutter. The film coating method comprises the following steps that (1) the surface of the milling cutter is coated with a transition layer oftitanium carbide and chromium carbide; (2) the milling cutter is placed in a vacuum chamber in chemical vapor deposition diamond growth equipment after being subjected to washing and dehydrating through acetone; (3) a cooling water system is turned on, firstly vacuumizing is conducted till the vacuum pressure reaches 10 torrs, then a heater power supply is turned on, electric current is slowly applied, and a hydrogen mass flowmeter is turned on; (4) a methane mass flowmeter is turned on after 5 minutes, the methane mass flowmeter is shut down after 1.5 hours, the hydrogen mass flowmeter is shut down after 2 hours, and normal operation of the cooling system is maintained; and (5) the cooling system is shut down after 1 hour, the vacuum chamber is opened, the cutter is taken out, and in thisway, the surface of the milling cutter can be coated with a layer of diamond film with the thickness being 20-25 micrometers. According to the film coating method of the milling cutter, the hardness,the strength and the toughness of the milling cutter are effectively improved.
Description
technical field [0001] The invention belongs to the technical field of cutter processing, and in particular relates to a coating method for milling cutters. Background technique [0002] At present, milling cutters generally have the problems of low bending strength, poor impact toughness, high brittleness and easy wear. In order to solve the above problems, most milling cutters are coated. In the prior art, the chemical phase deposition method is generally used for diamond coating, because the milling cutter generally contains 6-8% cobalt, and the precipitation of cobalt leads to difficulty in film formation or poor film adhesion. To solve this problem, the main measures are Removal of cobalt in the milling cutter material, that is, removing cobalt by chemical method, but this method destroys the matrix composition of the milling cutter, the tool matrix is greatly damaged, and the strength of the cutter body is reduced. Even if it can be coated with diamond, it is meaning...
Claims
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IPC IPC(8): C23C16/27C23C16/32
CPCC23C16/271C23C16/32
Inventor 罗跃进
Owner 无锡市锦润合金工具有限公司