High-temperature-resistant PVD coating for mold and preparation method thereof
A technology of high temperature resistance and mold, applied in the field of high temperature resistant PVD coating of mold and its preparation, which can solve the problems of mold scrap treatment and inability to re-use, and achieve the effect of reducing yield loss and production cost.
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[0022] The present invention also provides a method for preparing a mold high temperature resistant PVD coating, comprising the steps of:
[0023] (1) Purify the surface of the mold, finely grind and polish the corroded or scratched mold to make the mold surface reach a mirror state, and then use acetone and alcohol to ultrasonically clean and dry the mold;
[0024] (2) Use the arc power bombardment method to make a layer of AlCrN on the mold surface; the bias voltage of the arc power bombardment method is controlled at 220~360V, and the time is controlled at 5~8 minutes; preferably, the arc power bombardment method bias is controlled at 280V, the time is controlled at 6 minutes;
[0025] (3) Using vapor deposition method to use SiO2 and TiN to carry out intermediate multi-layer transition on the bottom layer; the equipment vacuum degree of the vapor deposition method is required to be above 3×10-5Torr, the bias value is set at 70V-120V, and the target material The current is...
Embodiment 1
[0029] A method for preparing a mold high temperature resistant PVD coating:
[0030] (1) Purify the surface of the mold, finely grind and polish the corroded or scratched mold to make the mold surface reach a mirror state, and then use acetone and alcohol to ultrasonically clean and dry the mold;
[0031] (2) use the arc power bombardment method to make a layer of AlCrN on the mold surface; the arc power bombardment method bias is controlled at 220V, and the time is controlled at 5 minutes;
[0032] (3) Use vapor deposition method to use SiO2 and TiN to carry out intermediate multi-layer transition on the bottom layer; the vacuum degree of the equipment of the vapor deposition method is required to be 3 × 10-5Torr, the bias value is set at 70V, and the target current is set In 4A; the number of layers in the middle layer is controlled at 10 layers; the single-layer deposition time of the vapor deposition method is controlled at 15 minutes;
[0033] (4) Put a protective layer...
Embodiment 2
[0035] A method for preparing a mold high temperature resistant PVD coating:
[0036] (1) Purify the surface of the mold, finely grind and polish the corroded or scratched mold to make the mold surface reach a mirror state, and then use acetone and alcohol to ultrasonically clean and dry the mold;
[0037] (2) use the arc power bombardment method to make a layer of AlCrN on the mold surface; the arc power bombardment method bias is controlled at 280V, and the time is controlled at 6 minutes;
[0038] (3) Use vapor deposition method to use SiO2 and TiN to carry out intermediate multi-layer transition on the bottom layer; the equipment vacuum degree of the vapor deposition method is required to be 4×10-5Torr, the bias value is set at 90V, and the target current is set In 6A; the number of layers in the middle layer is controlled at 11 layers; the single-layer deposition time of the vapor deposition method is controlled at 20 minutes;
[0039] (4) Put a protective layer CrN on t...
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