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Preparation method of surface coating of high-speed steel screw tap

A technology of taper surface and steel wire, applied in the field of surface coating preparation of high-speed steel taper, can solve problems such as environmental pollution, violation of cleanliness, green manufacturing technology development theme, etc., achieve good bonding, stable and safe production process, and reduce friction coefficient Effect

Active Publication Date: 2017-08-11
CHENGDU REALLY SHARP COATING TECH CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0023] At home and abroad, TiCN coatings are plated by reactive magnetron sputtering technology, but mainly through the Ti target and the reactive gas N 2 、CH 4 or C 2 h 2 role to obtain coatings, while CH 4 and C 2 h 2 The gas will cause serious pollution to the environment, which violates the development theme of clean and green manufacturing technology

Method used

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  • Preparation method of surface coating of high-speed steel screw tap
  • Preparation method of surface coating of high-speed steel screw tap
  • Preparation method of surface coating of high-speed steel screw tap

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preparation example Construction

[0064] The surface coating preparation method of high-speed steel taps adopts the method of combining cathodic arc method and magnetron sputtering method during coating; 2 Under the atmosphere, the Ti source is evaporated by the cathodic arc method, and the C element is sputtered by the magnetron sputtering method at the same time, and a TiN / C layer is plated on the surface of the high-speed steel tap; specifically, the following steps are included:

[0065] (1) Pre-treatment and equipment inspection of high-speed steel taps;

[0066] (2) Vacuumizing and preheating;

[0067] (3) Electron beam heating; vacuum chamber pressure to 2.5×10 -1 Pa, Ar gas flow 90-120Sccm; turn on the filament power supply, slowly increase the current to 170-230A; turn on the magnetic field current and adjust it to 12-20A; turn on the arc power supply, cause an arc, and gradually increase the current to 180A; heating time 40-70min.

[0068] (4) Gas plasma etching; control filament current 170-230A, ...

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Abstract

The invention discloses a preparation method of a surface coating of a high-speed steel screw tap and belongs to the technical field of nano-coatings. According to the method, during film coating, the manner that a cathode arc method and a magnetron sputtering method are combined is adopted; and in the N2 atmosphere, a Ti element is evaporated through the cathode arc method, meanwhile, a C element is sputtered through the magnetron sputtering method, and a TiN / C layer is prepared on the surface of the high-speed steel screw tap in a plated manner. Compared with an existing conventional method, by means of the method, the low production cost is kept, the environment is prevented from being polluted, and the comprehensive performance of the high-speed steel screw tap can be improved.

Description

technical field [0001] The invention belongs to the technical field of nano-coating, and in particular relates to a method for preparing a surface coating of a high-speed steel tap. Background technique [0002] Tapping is one of the common thread processing methods. During the tapping process, the tap is buried in the workpiece for continuous cutting, which often causes rapid wear and chipping of the tap due to high cutting load, low cutting speed, and poor chip removal. and early failures such as breakage. In addition, as the thread processing progresses, the contact area between the tap and the workpiece material becomes larger and larger, making it difficult to discharge chips. Therefore, taps often fail early due to problems such as improper chip removal and excessive torque during use, which lead to tap breakage, tooth chipping and rapid wear. Coating or modifying the surface of the tap can significantly improve the cutting performance and service life of the tap. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/35C23C14/06C23C14/16
CPCC23C14/0021C23C14/0605C23C14/0641C23C14/16C23C14/325C23C14/35
Inventor 赵海波刘亚鲜广梁红樱但秦
Owner CHENGDU REALLY SHARP COATING TECH CO LTD
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