What should you pay attention to when using the weldment heat treatment furnace?

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Mold heat treatment is generally divided into three parts: preliminary heat treatment, final heat treatment and surface strengthening.

The mold preparation heat treatment process is constantly reforming and developing. Cyclic annealing process, normalizing treatment process, elimination of chain carbide process, high temperature double heat treatment process, rapid and even annealing process, quenching and tempering instead of late fire process, rapid softening annealing process, etc., all play in the mold preparation process An important role.

The final heat treatment of the mold has conventional heat treatment, low temperature quenching, high temperature quenching, vacuum heat treatment and the like. The tempering specifications after quenching are also varied.

The low temperature quenching is quenched at a temperature 50-1 ° C lower or lower than the conventional quenching heating temperature. The high-temperature steel mold and high-alloy steel mold temperature quenching process is relatively mature and has been successfully applied, but the low-temperature quenching machine is not suitable for application on molds that are easy to wear and micro-rent.

The high temperature quenching is higher than the conventional quenching heating temperature by 30. 80YJ heat treatment process o 3cr2W8v, 5CrNtMo, 5crMnM. Equivalent work with high temperature quenching has achieved significant results in some areas, solving the key problem of not having a low product life.

Vacuum heat treatment has the advantages of high quality, low energy consumption, no oxidation, useless, etc., and has been widely used in heat treatment of molds. Multi-steel practice has proved that the use of high pressure gas quenching is superior to vacuum oil quenching.