Nitriding Quenching Salt

QPQ technology is a revolutionary new technology in the field of metallurgy. It permeates variety of metal elements to the surface in the two different nature of the bath which can improve wear resistance and corrosion resistance ten times than that of conventional heat treatment and surface anti-corrosion technology.

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Description

1. Introduction

This Nitriding Quenching Salt is used for quenching. Due to different uses of mechanical parts, the requirements for hardness of parts are also different, which determines that different steels should be selected for processing. The cooling speed of different types of steel varies greatly during quenching. Adding salt to water can effectively improve the cooling speed of parts, so as to obtain better hardenability. Therefore, ideal parts can be obtained by quenching with salt water during heat treatment. The quenching heating time is short, the crystal grains will not coarsen, and the toughness is strong. The technology has the advantages of no deformation, no pollution and energy saving. It can improve the wear resistance and corrosion resistance of machined parts by ten times. It can correspond to various heat treatment conditions (intermittent quenching, partial heat treatment, short time heating, etc.). It can be completed in a short time, and can correspond to multiple varieties and small batches of parts.

2. Details

Nitriding Quenching Salt
Category	QPQ Special Salt	Options Available	Technical characteristics	Remarks
Ordinary	Basic Salt	Powder and block	suitable for most ferrous metal materials, significant effect will be achieved especially for medium carbon steel, medium carbon alloy steel and other materials, and treatment cost is relatively low	Block refers to salt block that is caused by oxidation in salt moisture and the initial melting of the salt
	Adjusting Salt	powder
	Oxide Salt	powder
Second generation	Second Generation Basic Salt	Powder and block	Applicable to majority of ferrous materials, especially for high alloy steel, stainless steel and other materials. Effect will be enhanced significantly. Depth of nitride layer, layer hardness and resistance to corrosion will be improved compared to ordinary treatment.
	second generation adjusting salt	Powder and block
		powder
	High-temp Salt	chunks	Usage temperature 540℃—570℃
	Low-temp Salt	chunks	Usage temperature 525℃—535℃