Safety design principle of true air hardening furnace

Safety design principle of true air hardening furnace

Quench in vacuum quench and liquid quench two kinds.The gas quench will cool the workpiece by filling the cooling room with high purity, such as nitrogen, in the cooling room.The data of low critical cooling speed of martensitic system, such as high speed steel and high carbon chrome steel, are applied to the gas quenching.The liquid quench is to heat the workpiece in the heating chamber, move it to the cooling room and fill in the high purity nitrogen and immediately send it to the quench tank, and quickly cool down.If the external quality of the demand is high, the backfire and the accumulation and softening of the workpiece vacuum quenching and the solution of solid heat solution should be carried out in a vacuum furnace.
The secondary construction part of the true air quench furnace, which affects the construction of the hearth, the furnace door and the teeth ring.Because the vacuum gas quenching furnace in positive pressure and negative pressure alternating repeated application characteristic, in order to ensure the safe sex equipment application complete equipment of economy at the same time, the furnace shell and the ring gear after practice of calculation method, the check figure method, adopt the method of infinite element analysis to construct safe sex.Through mechanical model, the structural optimization of the thin segment in the design structure is carried out, and the requirements of structural safety are achieved.