A method for preparing thread anti-seizure coating by unbalanced magnetron sputtering

A magnetron sputtering, non-equilibrium technology, used in coating, sputtering, metal material coating process, etc., to achieve uniform and compact structure, good wear resistance, anti-seize, and strong adhesion.

Active Publication Date: 2019-11-12
西安赛福斯材料防护有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method aims at the problem of seizure failure that occurs during the disassembly and locking process of bolts, and proposes a method for preparing thread anti-seizure coatings by using unbalanced magnetron sputtering. The seized Ni-AgPd composite coating solves the problem of seized failure during bolt disassembly and locking. The Ag in the AgPd coating on the surface has good ductility and lubricity. After adding Pd, AgPd The thermal stability of the coating is improved, and the AgPd composite coating has good oxidation resistance and high hardness, and the comprehensive performance of the coating is improved

Method used

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  • A method for preparing thread anti-seizure coating by unbalanced magnetron sputtering
  • A method for preparing thread anti-seizure coating by unbalanced magnetron sputtering
  • A method for preparing thread anti-seizure coating by unbalanced magnetron sputtering

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Embodiment 1

[0025] The method of the present embodiment comprises the following steps:

[0026] Step 1. Bolt polishing and cleaning: Use a vibration polishing machine to vibrate and polish the bolts for 25 minutes, then use industrial degreaser, deionized water, absolute ethanol and deionized water for ultrasonic cleaning, each time The time of cleaning is all 12min; Add diamond polishing fluid and diameter to be the white corundum ball of 3mm in described vibration polishing machine, white corundum ball is as abrasive material, and the mass ratio of described white corundum ball and aluminum oxide polishing liquid is 10:1; the material of the bolt is 304 stainless steel;

[0027] Step 2, thread sandblasting: sandblasting the bolts after ultrasonic cleaning in step 1; the sandblasting gun head used in the sandblasting treatment is a siphon nozzle, and the process conditions for using a siphon nozzle for sandblasting are: The sand is made of quartz sand with a diameter of 300 mesh, the pr...

Embodiment 2

[0038] The method of the present embodiment comprises the following steps:

[0039] Step 1. Bolt polishing and cleaning: use a vibration polishing machine to vibrate and polish the bolts for 15 minutes, then use industrial degreaser, deionized water, absolute ethanol and deionized water for ultrasonic cleaning, each time The cleaning time is 8 minutes; when vibrating polishing, add diamond polishing liquid and white corundum balls with a diameter of 0.5mm in the vibrating polishing machine, and the white corundum balls are used as abrasives. The mass ratio of the white corundum balls to the alumina polishing liquid is is 10:1; the material of the bolt is 301 stainless steel;

[0040] Step 2, thread sandblasting: sandblasting the bolts after ultrasonic cleaning in step 1; the sandblasting gun head used in the sandblasting treatment is a siphon nozzle, and the process conditions for using a siphon nozzle for sandblasting are: The sand is made of quartz sand with a diameter of 4...

Embodiment 3

[0045] The method of the present embodiment comprises the following steps:

[0046] Step 1. Bolt polishing and cleaning: Use a vibration polishing machine to vibrate and polish the bolts for 30 minutes, then use industrial degreasing agent, deionized water, absolute ethanol and deionized water for ultrasonic cleaning, each time The time of cleaning is all 15min; Add diamond polishing liquid and the white corundum ball that diameter is 5mm in described vibration polishing machine during vibration polishing, white corundum ball is as abrasive material, and the mass ratio of described white corundum ball and aluminum oxide polishing liquid is 10:1; the material of the bolt is 316 stainless steel;

[0047] Step 2, thread sandblasting: sandblasting the bolts after ultrasonic cleaning in step 1; the sandblasting gun head used in the sandblasting treatment is a siphon nozzle, and the process conditions for using a siphon nozzle for sandblasting are: The sand is made of quartz sand w...

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Abstract

The invention discloses a method for preparing a thread anti-seizure coating by adopting an unbalanced magnetron sputtering technology. The method includes: 1. polishing and cleaning the bolts; 2. sandblasting the bolts; , Ag target and Pd target are respectively placed on multiple independent target positions of the unbalanced magnetron sputtering equipment, and the unbalanced magnetron sputtering technology adopts the deposition of Ni transition layer on the surface of the bolt: 4. Using the unbalanced magnetron sputtering technology Continue to deposit the AgPd coating on the Ni transition layer, and finally the thread anti-seizure coating is composed of the Ni transition layer and the AgPd coating. The invention solves the problem of galling failure occurring in the process of disassembling, assembling and locking bolts, wherein the Ag in the AgPd coating on the surface layer has good ductility and lubricity, and the thermal stability of the coating is improved after adding Pd, At the same time, the AgPd composite coating has good oxidation resistance and high hardness, and the comprehensive performance of the coating can be improved.

Description

technical field [0001] The invention belongs to the technical field of coating preparation, and in particular relates to a method for preparing a thread anti-seize coating by unbalanced magnetron sputtering. Background technique [0002] Bolts are commonly used fasteners in mechanical equipment. Generally, more than 60% of the parts of the machine need to be threaded, which plays a decisive role in the normal operation and safe production of the machinery and equipment. During long-term use, the occurrence of thread seizure has brought great trouble to the daily repair and maintenance of machinery and equipment, especially for some large-scale equipment such as water wheels and power plant generators. It has reached dozens or even hundreds of kilograms. If the phenomenon of thread seizure occurs, it will need to delay a large amount of construction period for reinstallation, which seriously affects the economic benefits of the enterprise. The external causes of bolt seizure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/02C23C14/16
CPCC23C14/021C23C14/025C23C14/028C23C14/165C23C14/352
Inventor 高广睿呼丹屈静王宝云李超众颜学柏李争显
Owner 西安赛福斯材料防护有限责任公司
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