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Cooling fluid in use for super fine milling functional crystal of potassium dihydrogen phosphate

A technology of potassium dihydrogen phosphate and coolant, which is applied in the petroleum industry, additives, lubricating compositions, etc. It can solve the problems of easy deliquescence, high brittleness, sensitivity to temperature changes, etc., and achieve the effect of reducing brittle damage and reducing residual stress

Inactive Publication Date: 2008-03-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of deliquescent, soft, brittle, sensitive to temperature changes and easy to crack, KDP crystals are prone to "fogging" on the processing surface when using coolant, and crystal cracking will occur in severe cases.

Method used

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  • Cooling fluid in use for super fine milling functional crystal of potassium dihydrogen phosphate
  • Cooling fluid in use for super fine milling functional crystal of potassium dihydrogen phosphate

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Embodiment 1: The coolant in this embodiment is composed of aviation kerosene, EDTA and SSal, wherein aviation kerosene is used as the matrix, the addition amount of EDTA is 1.598mg / L~3.2mg / L, and the addition amount of SSal is 0.031mg / L L~0.1mg / L.

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment is different from Embodiment 1 in that the amount of EDTA added is 1.6 mg / L, and the amount of SSal added is 0.04 mg / L.

specific Embodiment approach 3

[0033] Embodiment 3: This embodiment is different from Embodiment 1 in that the amount of EDTA added is 2.4 mg / L, and the amount of SSal added is 0.062 mg / L.

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PUM

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Abstract

This invention discloses a cooling liquid for ultraprecision milling of functional potassium dihydrogen phosphate crystals. Since potassium dihydrogen phosphate crystals have such characeristics as easy deliquescence, high softness, high brittleness, high temperature-change sensitivity and easy cracking, traditional cooling liquids may cause surface fogging phenomenon or even surface cracking. The cooling liquid in this invention is composed of: aviation kerosene as the matrix, EDTA 1.598-3.2 mg / L and sulfosalicylic acid 0.031-0.1 mg / L. The cooling liquid can largely reduce surface roughness of processed crystals, lower surface residual stress, inhibit surface fragile damage and avoid surface fogging phenomenon.

Description

technical field [0001] The invention relates to a cooling liquid, in particular to a cooling liquid used for ultra-precision milling of functional crystal potassium dihydrogen phosphate (KDP). Background technique [0002] Potassium dihydrogen phosphate (KDP) crystal is an inorganic nonlinear optical material with excellent performance. It has been widely used in technical fields such as laser inertial confinement fusion and laser communication. In order to improve the processing accuracy and surface Quality, countries have invested a lot of manpower and material resources to study its processing technology. At present, the single point diamond turning (SPDT) method is usually used at home and abroad to process KDP crystals in plastic mode. The use of coolant in foreign countries reflects that coolant can effectively improve the processing quality of KDP crystals, but because KDP crystals play an extremely important role in aviation, aerospace and national defense, its rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M135/10C10M133/04C10N40/22
Inventor 陈明君梁迎春王景贺李旦
Owner HARBIN INST OF TECH