Gas nitrogen carbon oxygen qpq multi-component compound penetration aid for cast iron products and its application method

Abstract

The invention discloses a nitrogen-carbon-oxygen QPQ multi-element compound permeation aid for cast iron products and a use method thereof, which comprises the following components in parts by weight: 80-100 parts of ethanol, 6-10 parts of activated carbon powder, and 10-10 parts of triethanolamine 20 parts, 2-5 parts of oxidized rare earth powder, 1-3 parts of nickel powder and 1-2 parts of dispersant. The invention improves the nitrogen absorption capacity of cast iron products by improving the adhesion of nitrogen on the surface of cast iron products and speeding up the nitriding speed, thereby helping the multi-component compound infiltration agent to achieve the best co-infiltration effect, and the treatment time of cast iron products is significantly shortened , the reduction time can be as high as 0.5h or more, which reduces the processing cost and overcomes the shortcomings of traditional penetrating agents.

Description

technical field [0001] The invention relates to the field of the temperature field structure of a crystal growth furnace, in particular to a nitrogen, carbon, oxygen, QPQ multi-component composite penetration aid for cast iron products and a use method thereof. Background technique [0002] QPQ technology is a metal surface composite chemical heat treatment technology of salt bath nitrocarburizing and salt bath oxidation. QPQ technology can greatly improve the wear resistance, corrosion resistance and fatigue resistance of the surface of metal materials. The development history of QPQ technology is from gas nitriding to cyanide salt nitriding, salt bath soft nitriding to gas soft nitriding, gas nitrocarburizing to pollution-free salt bath composite treatment. For the gas nitrocarburizing process, its essence is gas nitrocarburizing. The raw materials used for gas nitrocarburizing mainly include urea, formamide, ammonia, etc. The gas nitrocarburizing method not only overcomes...

AI Technical Summary

Problems solved by technology

For the gas nitrocarburizing process, its essence is gas nitrocarburizing. The raw materials used for gas nitrocarburizing mainly include urea, formamide, ammonia, etc. The gas nitrocarburizing method not only overcomes the cyanide The shortcomings of the nitriding method have been greatly improved in terms of pollution. The performance of the nitriding layer is basically the same as that of the salt bath nitrocarburizing layer. However, the product quality of the gas nitrocarburizing will be lower. Affected by factors such as unstable process and difficult control of soft nitriding effect, its application is limited

For example, when using ammonia dripping alcohol to treat the surface of multi-cavity iron castings for anti-corrosion and anti-rust treatment, due to the difficulty in controlling the amount of ammonia decomposition, the soft nitriding effect is not easy to control, the thickness of the nitrided layer is uneven, and the quality Uncontrollable, so there is an urgent need to improve existing technologies

At the same time, in the multi-component composite co-infiltration process, the adhesion of nitrogen on the surface of cast iron products is directly related to the time and effect of nitriding treatment. When the traditional technology is in co-infiltration, the adhesion of nitrogen on the surface of cast iron products is not ideal, and the treatment time is too long. , higher processing cost