There are two ignition methods for the vacuum silver-plated hollow cathode discharge deposition gun:

There are two ignition methods for the vacuum silver-plated hollow cathode discharge deposition gun:

 

1. The high-frequency electric field is applied to the cathode tantalum tube to ionize the argon gas of the cathode tantalum tube into argon ions, thereby causing the cathode tantalum tube to be bombarded by argon ions continuously, until it is heated to the lowest temperature standard for electron emission to generate a plasma electron beam;

 

2. Apply a DC voltage of about 300V between the auxiliary anode and the cathode tantalum tube, and the cathode tantalum tube is still filled with argon gas. When the argon gas pressure is 1Pa-10Pa, the auxiliary anode and the cathode tantalum tube have a glow discharge phenomenon. Argon ion bombardment continuously bombards the cathode tantalum tube until the temperature of 2300K-2400K, the cathode tantalum tube emits a large number of electrons, and the "glow discharge" is changed to "arc discharge". At this time, the voltage is as low as 30V-60V, then A plasma electron beam can be generated as long as the power is connected between the cathode and anode.

Vacuum silver WC/C, B4C film

WC/C, B4C thin films M. Murakawa, Department of Mechanical Engineering, Japan Institute of Technology, and others used PVD technology to deposit WC/C thin films on the surface of gears. Under the condition of no oil lubrication, its service life is 3 times that of ordinary quenched and ground gears. Franz J et al. used PVD technology to deposit WC/C and B4C films on the surface of FEZ-A and FEZ-C gears. Experiments show that PVD coating significantly reduces gear friction, makes gears less prone to thermal bonding or gluing, and improves the bearing capacity of gears. ability.

 

 

The so-called main pump is a vacuum pump that directly evacuates the vacuum system to obtain the vacuum degree required by the process requirements.

 

1. Improve the original gun body structure, from the original maximum current of 230A to 280A.

 

2. Improve the original cooling system structure, from the original 4 degree ice water machine cooling to room temperature cooling water cooling, saving electricity for users.

 

3. Improve the original mechanical transmission structure and change it to a magnetic fluid transmission structure, so that the turntable will not be stuck at high temperature.

 

4. The effective coating area is ￠650X1100, which can accommodate 750X1250X600 super-large molds and super-long broaches from gear manufacturers, with a very large volume.