Glass protection lubricant powder used for titanium alloy die forging forming and paint

A technology of lubricants and titanium alloys, applied in the directions of lubricating compositions, coatings, etc., can solve problems such as narrow temperature range, and achieve the effect of good wettability

Inactive Publication Date: 2015-12-09
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applicable temperatu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Will 1 # ~6 # One of the glass protective lubricant coatings is coated on the surface of the Tc4DT titanium alloy 75×50mm square test piece, and the test burning test is carried out at 960°C and kept for 8 hours. The glass protective lubricant is on the surface of the sample within 8 minutes within the test conditions. Form a layer of uniform and smooth glass film, after 8 hours of insulation glass protective lubricant does not flow, showing a good protective effect.

Embodiment 2

[0021] Will 1 # ~6 # One of the glass protective lubricant coatings is coated on the surface of the inner diameter and outer diameter of the ring sample. The ring sample is forged at 960 ° C for 1 hour according to HB7056. After forging, the friction coefficient is lower than 0.01, which has good The lubricating effect meets the requirements of HB7056.

Embodiment 3

[0023] to 1 # ~6 # One of the glass protective lubricant coatings was subjected to thermal analysis, and its melting temperature was 700-705°C. At 900-960°C, the high-temperature contact angle is less than 40°, 4 # Glass protection lubricant at 945 ± 15 ℃ high temperature viscosity 10 4.5 ~10 5.5 cp.

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Abstract

The invention belongs to the technical field of paint, and relates to glass protection lubricant powder used for titanium alloy die forging forming and paint. The glass protection lubricant powder comprises silicon dioxide (SiO2), sodium oxide (Na2O), calcium oxide (CaO) and boric oxide (B2O3). Brush coating is conducted through suspension prepared from heat-resistant type water-soluble cellulose and water, wherein the grain size of glass powder is 200 meshes or below. The use temperature range of the glass protection lubricant is wide and is between 700 DEG C and 1000 DEG C, melting begins at the temperature of 700 DEG C, and no flowing happens at the temperature of 1000 DEG C. the forging process temperature of titanium alloy is 945+/-15 DEG C. The high temperature viscosity change range of the glass protection lubricant is narrow, and melting coverage can be achieved within the short time of 8 minutes or less. The flowing and protection deficiency phenomena do not happen within the heat preservation time of 8 hours. In addition, the high-temperature contact angle of the prepared glass protection lubricant on the surface of TC4 titanium alloy is small, the temperature is 40 degrees lower than the temperature of 945+/-15 DEG C, and in other words, the titanium alloy surface wettability is good. The friction coefficient measured through a circular ring test is lower than 0.01.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a glass protective lubricant powder and coating for titanium alloy die forging. Background technique [0002] Titanium alloy has excellent comprehensive mechanical properties and is widely used in aerospace and its engine structure. With the continuous improvement of structural integration design requirements, large-scale and integration have become the development trend of advanced aerospace titanium alloy die forgings. In the process of titanium alloy die forging, the lubricating and protecting agent is a protective agent coated on the surface of the blank to play a comprehensive role in heat insulation, heat preservation, oxidation prevention, and lubrication. It can prevent the titanium alloy from heating and oxidation while reducing deformation. resistance and ensure dimensional accuracy. In the forging process of large forging integral die forgings, due to its slow heating...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M173/02C09D101/28C09D7/12
Inventor 鲍天骄李凤兰王振军张岩王彦朱知寿
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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