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Thermally stable quenching oil additive composition and preparation method thereof

A technology of quenching oil and thermal stability, applied in the field of heat treatment, can solve the problems of cooling rate decrease, heat treatment rework rate increase, overspeed quenching oil cooling rate is easy to decline, etc., and achieve good cooling rate stability and low cooling rate decay value

Pending Publication Date: 2022-03-08
JIANGSU XINLU NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the heat treatment process of many metal parts, in order to obtain the ideal metallographic structure and mechanical properties, it is necessary to use overspeed quenching oil, but the cooling rate stability of the overspeed oil additives currently on the market is not ideal, the prepared overspeed quenching oil cooling The cooling rate is easy to decline, and the cooling rate drops sharply after a short period of use, which is far lower than the cooling rate of overspeed quenching oil; it seriously affects the mechanical properties of heat-treated workpieces, which greatly increases the rework rate of heat treatment

Method used

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  • Thermally stable quenching oil additive composition and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] At room temperature, 40g of polydicyclopentadiene resin with a softening point of 90°C, 58g of soybean oil-based alkyd resin with an oil length of 75, and 2g of dinonylamine, add dinonylamine to the soybean oil-based alkyd resin, stir evenly, and heat up to 90°C, stirred at the preparation temperature of 90°C until dissolved, and cooled to room temperature to obtain Additive 1.

Embodiment 2

[0021] At room temperature, 30g of polydicyclopentadiene resin with a softening point of 100°C, 68g of linseed oil-based alkyd resin with an oil length of 75, 2g of dibutylphenylamine, adding dibutylphenylamine to linseed oil-based alkyd resin , stirred evenly, heated up to 100°C, stirred at the preparation temperature of 100°C until dissolved, and cooled to room temperature to obtain Additive 2.

Embodiment 3

[0023] At room temperature, 20g of polydicyclopentadiene resin with a softening point of 110°C, 77g of linseed oil-based alkyd resin with an oil length of 70, 3g of 4-butyl 4'-octyl diphenylamine, 4-butyl 4'-octyl Add linseed-based diphenylamine to linseed oil-based alkyd resin, stir evenly, raise the temperature to 110°C, stir at the preparation temperature of 110°C until dissolved, and cool to room temperature to obtain Additive 3.

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Abstract

The invention discloses a heat-stable quenching oil additive composition and a preparation method thereof. The heat-stable quenching oil additive composition comprises the following components: 1-40% of polydicyclopentadiene resin; 60-96% of alkyd resin; and 1-3% of organic secondary amine. The preparation method comprises the following steps: 1) adding 1-3% of organic secondary amine into 60-96% of alkyd resin at normal temperature, uniformly stirring, and heating to 90-120 DEG C; and 2) adding polydicyclopentadiene resin, stirring and dissolving uniformly at the preparation temperature of 90-120 DEG C, and cooling to room temperature to obtain yellow viscous liquid. Compared with overspeed quenching oil prepared by using additives in the market under the same condition, the overspeed quenching oil prepared by using the additive composition has a lower cooling rate decline value, and the prepared overspeed quenching oil has better cooling rate stability.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular to a heat-stable quenching oil additive composition and a preparation method thereof. Background technique [0002] Quenching is a part of the heat treatment process. The steel is heated above the phase transition temperature, and after a certain period of time, it is rapidly cooled in a cooling medium to obtain a martensitic structure. [0003] In the heat treatment process of many metal parts, in order to obtain ideal metallographic structure and mechanical properties, overspeed quenching oil is required, but the cooling rate stability of overspeed oil additives currently on the market is not ideal, and the prepared overspeed quenching oil cooling The cooling speed is easy to decline, and the cooling speed drops sharply after a short period of use, which is far lower than the cooling speed of overspeed quenching oil; it seriously affects the mechanical properties of heat-tr...

Claims

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Application Information

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IPC IPC(8): C21D1/58
CPCC21D1/58
Inventor 方建王飞飞
Owner JIANGSU XINLU NEW MATERIALS CO LTD