Keywords: treatment, heat, process, Heat treatment, heating, cooling, quenching medium,

　　Heat treatment is divided into two processes: heating and cooling. The ideal heat treatment quality can be obtained by scientifically controlling the two processes respectively. Reasonable selection and scientific use of quenching medium is the essence of controlling the cooling process.
　　1. bolts, studs, screws, nuts and special-shaped non-standard parts mainly ML35(32, 40), etc. shall be quenched with medium with faster cooling speed in heat treatment equipment due to material hardenability problems, so as to meet the requirements of hardness, metallographic and mechanical properties of quenching parts.
　　I. the product size is M4-Ml 6, you can choose 3-5% KR6480 polymer water-soluble quenchant, if you choose 35#,35A, 35S can be relaxed to M18--M20.
　　II, product size is M10 ~ M24, you can choose 8 ~ 10% KR7280 water-soluble quenching agent.
　　 III, the product size is larger than M24, lO ~ 15% KR7280 water-soluble quenchant can be selected.
　　 IV, the product is mainly 45#, you can choose KR6480 or KR7280 according to the size of your product.
　　2. bolts, bolts, screws, nuts and special-shaped non-standard parts mainly composed of 35CrMo,40Cr,20MnTiB,35VB, etc.
　　 I, if your products are mainly 35CrMo and 40Cr, you can choose KRll8 fast quenching oil or 5 & mdash;10% KR6480 polymer water-soluble quenchant.
　　Ⅱ. If your products are mainly 20MnTiB and 35VB, you can choose KR7280 or KR6480.
　　3, KR6480 or KRll8 can be selected for shallow carburized self-tapping screws and pins mainly made of low carbon steel 10#, 15#,20#,20Cr,1018, 1022, 10B21, etc.
　　4. 65Mn,60Si2Mn, 70, etc. Spring washers, retaining rings, etc. can be used with KRl18 fast quenching oil.
　　5. has many kinds of products, and KRll8 or KR6480 (which can meet the requirements of quenching and carburizing quenching of all alloy steel and carbon steel of certain size) can be selected for large size span. the intrinsic quality of the workpiece is determined by the heat treatment quality. Quenching medium plays a decisive role in heat treatment, but it is the smallest part of the production cost of heating equipment. As long as a little attention is paid to the quenching medium, professional and reliable products can enjoy professional consultation and after-sales service, receive unexpected results, and greatly reduce the comprehensive production cost.
　　remarks: 1. KR6480 is the 1 water-soluble quenchant with strong versatility.
　　2 and KR7280 are the fastest water-soluble quenchants in the world (excellent new products of general parts association) and are widely used in Europe.
　　3, KRll8 is currently the world is fastest cooling quenching oil, with very strong material compatibility. 

More A brief introduction to the process of heat treatment technology: www.quenchtank.com/view-84.html