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Clamp and process used for coating inner bore with diamond film

A diamond film and coating technology, applied in metal material coating process, coating, gaseous chemical plating and other directions, to achieve the effect of reducing production cost, automatically compensating for hot wire drawing and excellent heat dissipation performance

Inactive Publication Date: 2014-06-04
武汉世纪中航超强金刚石膜高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vertical installation method takes into account the requirements of mass production, but it can only achieve single-filament multi-mode (up to 3-4 pieces), while multiple hot wires can be realized in the narrow and conductive metal space of extremely high-temperature coating equipment It is very unrealistic to connect the two ends of the electrode vertically. Therefore, multi-filament multi-mode can only be a good wish.

Method used

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  • Clamp and process used for coating inner bore with diamond film
  • Clamp and process used for coating inner bore with diamond film
  • Clamp and process used for coating inner bore with diamond film

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Take 60 pieces of inner hole Ф5mm wire drawing die (referred to as "workpiece") inner hole coating diamond film as an example:

[0036]1. Use absolute alcohol to clean and remove the anti-rust oil on the surface of the workpiece, then put the cleaned workpiece into a constant temperature drying box, dry it within 1 minute, and control the temperature at 50°C;

[0037] 2. Use the pretreatment solution to etch the surface of the substrate in an ultrasonic cleaning machine to perform "pretreatment" for 50 minutes, and then dry it to increase the nucleation density of the diamond film deposition. The pretreatment solution is: use sodium ferrate (Na 2 FeO 4 ), potassium hydroxide (KOH), water (H 4 o 2 ) is prepared according to the weight ratio of 1:2:20;

[0038] 3. Then use W6 diamond micropowder to polish the workpiece pretreated in the previous step, so that the workpiece forms a frame foundation before coating the diamond film;

[0039] 4. Clean again: use acetone +...

Embodiment 2

[0047] Taking 40 pieces of drawing dies with Ф10mm inner holes (referred to as "workpieces"), the equipment in Example 1 and the diamond film in the inner hole of the jig to calibrate the center line of the V-shaped pad as an example:

[0048] Use absolute alcohol to clean and remove the anti-rust oil on the surface of the workpiece, then put the cleaned workpiece into a constant temperature drying oven, dry it within 1 minute, and control the temperature at 60°C;

[0049] Next, use a pretreatment solution to etch the surface of the substrate in an ultrasonic cleaner for 50 minutes of "pretreatment" and dry it to increase the nucleation density of the diamond film deposition. The pretreatment solution is: use sodium ferrate (Na 2 FeO 4 ), potassium hydroxide (KOH), water (H 4 o 2 ) is prepared according to the weight ratio of 1:2:20;

[0050] Then use W6 diamond micropowder to polish the workpiece pretreated in the previous step, so that the workpiece forms a frame foundati...

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Abstract

The invention discloses a clamp used for depositing a diamond film on an inner bore and a process for depositing the diamond film by using the clamp. The coating diamond film is deposited through cleaning, drying, pretreatment, workpiece polishing and grinding, nucleation through hot filament CVD deposition equipment, growth, etc. The diamond film deposited in the invention has the characteristics of a Vickers hardness value of HV9000, continuous, uniform and compact coating morphology and excellent heat radiation performance.

Description

technical field [0001] The invention relates to a fixture for depositing a diamond film with an inner hole mold, and a process method for depositing a diamond film by using the fixture. Background technique [0002] Inner hole dies mainly include wire drawing dies, punching dies, extrusion dies, etc., which are necessary for large-scale and industrialized production of wires and pipes such as welding wire, welding rod, stainless steel, cold heading steel, copper, aluminum, alloy steel, tungsten, and molybdenum. The indispensable mold must have the effect of long service life, high dimensional accuracy, and good surface quality of wire or pipe. [0003] However, the cold extension, directional drawing and drawing of metal materials, such as the drawing of pipes and wires, requires high diameter tolerance, stable precision and good surface finish. The continuous operation of mass production has higher requirements on the service life of the mold. The hardness of the metal mat...

Claims

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Application Information

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IPC IPC(8): C23C16/44C23C16/27
Inventor 陈远达王胜云
Owner 武汉世纪中航超强金刚石膜高科技有限公司
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