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Self-lubricating composite soft coating cutter and manufacture method thereof

A soft coating and self-lubricating technology, applied in coatings, metal material coating processes, layered products, etc., can solve problems such as lack of cutting fluid lubrication and cooling, tool wear, and liquid lubrication performance decline

Active Publication Date: 2007-03-14
ZHEJIANG DEWEI CEMENTED CARBIDE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of high-speed cutting, the use of cutting fluid lubrication has the following disadvantages: (1) It is difficult for the additives in the cutting fluid to interact with the surface of the tool under high temperature to form a boundary film that can fully contact
(2) The viscosity of cutting fluid decreases exponentially with the increase of temperature; (3) The decline of liquid lubrication performance in high temperature environment
However, during high-speed dry cutting, due to the lack of lubrication and cooling effects of cutting fluid, the friction conditions between the tool workpiece and tool chips are extremely severe, the friction force increases, the cutting temperature rises sharply, and the tool wear is very serious

Method used

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  • Self-lubricating composite soft coating cutter and manufacture method thereof

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Embodiment 1

[0020] Embodiment 1: A self-lubricating composite soft-coated tool and its preparation method. The base material of the tool is: W18Cr4V high-speed steel; the coating material is: Ti, Zr and MoS 2 ; The deposition method is: medium frequency magnetron deposition MoS 2 +Multi-arc plating of Zr and Ti. Its preparation process steps are as follows:

[0021] (1) Pretreatment: Polish the W18Cr4V high-speed steel tool base material to a mirror finish, remove the surface contamination layer, put it into alcohol and acetone for ultrasonic cleaning for 15 minutes each, remove surface sweat stains, oil stains and other dirt, and quickly put it into the vacuum chamber. Vacuum chamber background vacuum 7.0×10 -3 Pa, heated to 160°C and kept for 30 minutes.

[0022] (2) Ion cleaning: Ar gas 0.8Pa, turn on the bias power supply, voltage: 800V, duty cycle: 0.2, glow discharge cleaning for 15 minutes; reduce the bias voltage to 200V / 0.2, turn on the ion source ion cleaning for 15 minutes....

Embodiment 2

[0028] Embodiment 2: A self-lubricating composite soft-coated tool and its preparation method. The base material of the tool is: YT14 cemented carbide; the coating material is: Ti, Zr and MoS 2 ; The deposition method is: medium frequency magnetron deposition MoS 2 +Multi-arc plating of Zr and Ti. Its preparation process steps are as follows:

[0029] (1) Pretreatment: Polish the YT14 cemented carbide tool base material to a mirror finish, remove the surface contamination layer, put it into alcohol and acetone for ultrasonic cleaning for 15 minutes each, remove surface sweat stains, oil stains and other dirt, and put it away quickly after drying fully. into the vacuum chamber. Vacuum chamber background vacuum 7.0×10 -3 Pa, heated to 160°C and kept for 40 minutes.

[0030] (2) Ion cleaning: Ar gas 1.0Pa, turn on the bias power supply, voltage: 900V, duty cycle: 0.2, glow discharge cleaning for 15 minutes; reduce the bias voltage to 200V / 0.2, turn on the ion source ion clean...

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Abstract

The invention relates to a self-lubricant composite soft coat blade, and relative production. Wherein, said blade uses the MoS2 / Zr / Ti composite coat blade made from middle-frequency magnetic-control multi-arc plating method; the surface of blade is MoS2 layer, between which can base there are Ti, MoS2 / Zr / Ti, and MoS2 / Zr transition layer; when using said blade to cut, the surface of blade can form continuous lubricant layer, to realize self-lubricant function; since the solid lubricant has low shearing strength, the solid lubricant layer will be transferred to the surface of work piece, to form transfer film and the friction in the cutting process will generate inside the solid lubricant layer, to reduce friction, reduce shearing force and reduce shearing temperature.

Description

technical field [0001] The invention belongs to the technical field of mechanical cutting tool manufacturing, in particular to a self-lubricating composite soft-coated tool and a preparation method thereof. Background technique [0002] At present, the main way to reduce the friction and wear of cutting tools at home and abroad is to use cutting fluid with certain lubricating effect. The main function of cutting fluid is to improve the friction and lubrication state of the machining process, reduce the cutting temperature, and thus increase the tool life. However, in the high-speed cutting process, the use of cutting fluid lubrication has the following disadvantages: (1) It is difficult for the additives in the cutting fluid to interact with the surface of the tool under high temperature to form a boundary film that can fully contact. (2) The viscosity of cutting fluid decreases exponentially with the increase of temperature; (3) The decline of liquid lubrication performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00B32B9/00C23C14/02C23C14/06C23C14/54C23C14/58
Inventor 邓建新赵金龙宋文龙
Owner ZHEJIANG DEWEI CEMENTED CARBIDE MFG CO LTD
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