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Manufacturing process of screw rod of ceramic-phase nanocrystalline composite coating injection molding machine

A technology of nanocrystalline composite and injection molding machine screw, which is applied in the direction of metal material coating process, coating, ion implantation plating, etc., can solve the problems of insufficient wear resistance and corrosion resistance, and achieve shortening of islanding time and friction The effect of low coefficient and good anti-corrosion effect

Inactive Publication Date: 2013-07-24
李固加
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, PVD technology mainly includes two methods: arc ion plating and magnetron sputtering, but the hardness of ceramic coatings such as TIN and CRN produced by these two methods is only twice that of nitriding, and the wear resistance and corrosion resistance Not enough, very limited when used on the surface of the screw

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]First polish the surface of the screw rod of conventional materials, clean it with ultrasonic degreasing and wax removal, and then dry it. After installing the fixture, put it in the cavity of the self-developed VAST-P800 coating equipment, and carry out vacuum heating. The heating temperature is set at 350 degree, when vacuumed to 5×10 -3 Pa, start to fill with argon gas, the partial pressure of argon gas is at 0.2Pa, and perform argon ion glow discharge cleaning for 30 minutes. After the argon gas cleaning is completed, use the cleaned screw as the base material, The temperature of the substrate is 350 degrees, under the bias voltage of -150V, deposit a 500nm thick Cr layer transition layer on the substrate, then turn off the argon gas, fill in nitrogen, the nitrogen partial pressure is 0.5Pa pressure, the temperature is 350 degrees, the substrate bias Open the Ti, Al, Si, and Cr targets under the condition of -250V, and deposit the TiAlCrN / Si crystal composite layer o...

Embodiment 2

[0037] First polish the surface of the screw rod of conventional materials, clean it with ultrasonic degreasing and wax removal, and then dry it. After installing the fixture, put it in the cavity of the self-developed VAST-P800 coating equipment, and carry out vacuum heating. The heating temperature is set at 300 degree, when vacuumed to 5×10 -3 Pa, start filling with argon gas, the partial pressure of argon gas is at 0.1Pa, and carry out argon ion glow discharge cleaning for 40 minutes. Partial pressure at 0.5Pa, substrate temperature 300 degrees, -200V bias, deposit a 500nm thick TiN transition layer on the substrate, then turn off argon, fill with nitrogen, nitrogen partial pressure at 0.6Pa pressure, temperature Open the Ti, Al, Zr, Cr, W targets under the condition of 300 degrees, substrate bias -200V, and deposit multi-element interlaced ceramic phase nanocrystalline structure composite layer TiAlCrZrN / W crystal as the main functional layer, the thickness of the main fu...

Embodiment 3

[0039] First polish the surface of the screw rod of conventional materials, clean it with ultrasonic degreasing and wax removal, and then dry it. After installing the fixture, put it in the cavity of the self-developed VAST-P800 coating equipment, and carry out vacuum heating. The heating temperature is set at 350 degree, when vacuumed to 5×10 -3 Pa, start filling with argon gas, the partial pressure of argon gas is at 0.15Pa, carry out argon ion glow discharge cleaning, the time is 30 minutes, after the argon gas cleaning is completed, use the cleaned screw as the base material, The temperature of the substrate is 350 degrees, under the bias voltage of -180V, deposit a 500nm thick Cr layer transition layer on the substrate, then turn off the argon gas, fill in nitrogen, the partial pressure of nitrogen is 0.55Pa pressure, the temperature is 350 degrees, the substrate bias Open the Ti, Al, Si, and Cr targets under the condition of -230V, and deposit TiAlCrN / Si crystal composit...

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Abstract

The invention discloses a manufacturing process of a screw rod of a ceramic-phase nanocrystalline composite coating injection molding machine. The manufacturing process comprises the following steps of: cleaning the screw rod; using the cleaned screw rod as a base material, and depositing a 500nm-thick ceramic-phase nanocrystalline structure transition layer of a single substance or a nitride or a carbide or a nitrogen carbide of Ti, Si, W, Al, Cr and Zr on the base material; depositing at least two alternately deposited 5-8-micron-thick ceramic-phase nanocrystalline structure composite layers of the nitride or the carbide or an oxide or the nitrogen carbide of the Ti, Si, W, Al, Cr and Zr on the transmission layer as main functional layers; and depositing 2-3-micron-thick AlCrN doped DLC (Diamond-Like Carbon) film layer on the main functional layers as a self-lubricating layer. The manufacturing process of the screw rod of the ceramic-phase nanocrystalline composite coating injection molding machine can be used for enabling the screw rod to have better abrasive resistance, corrosion resistance and lubrication exclusion, so that the equipment failure rate of the injection molding machine is lowered, the equipment operation stability is improved and the service life of the screw rod is prolonged in multiples.

Description

technical field [0001] The invention belongs to the technical field of plastic molding equipment, and more specifically relates to a ceramic phase nanocrystalline composite coating injection molding machine screw and a preparation process thereof. Background technique [0002] Plastic products can be seen everywhere in our life. Our life is already plastic products. With the improvement of people's living standards and the increase of environmental awareness, the requirements for plastic products are getting higher and higher. Plastic machinery is an important pillar of the development of the plastics industry, the foundation of the development of the plastics industry, and is also affected by the development of the plastics industry. In the entire production process of plastic products, the three types of machinery, injection molding machines, extruders, and blow molding machines, account for 70-80% of the total output value of plastic machinery. Screw and barrel are the c...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/35B29C45/48
Inventor 李固加
Owner 李固加
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