Salt-bath heat treatment apparatus
AssigneeParker Netsushori Kogyo K.K.
InventorsYuya HIRAI, Kenta KOMATSUBARA
Life of this patent
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Abstract
In order to subject a metal member to cooling under isothermal heat treatment, a salt-bath heat treatment apparatus 10 comprises: a salt bath tank 1 which accommodates a nitrate salt bath including a molten nitrate salt; a water addition device 2 to add water to the nitrate salt bath in the salt bath tank 1; a humidity detection device 5 comprising a humidity sensor 53a to output a signal corresponding to humidity caused by water vapor generated from the nitrate salt bath with water added by the water addition device 2; and a control device 100 configured to control the water addition device 2 to adjust an addition amount of water to the nitrate salt bath, based on the signal output from the humidity sensor 53a of the humidity detection device 5.
Claims9
A salt-bath heat treatment apparatus for performing a heat treatment of a metal member using a salt bath, the salt-bath heat treatment apparatus comprising:
- a salt bath tank which accommodates a nitrate salt bath including a molten nitrate salt to cool the metal member under an isothermal heat treatment;
- a water addition device for adding water to the nitrate salt bath in the salt bath tank;
- a humidity detection device comprising a humidity sensor to output a signal corresponding to humidity caused by water vapor generated from the nitrate salt bath with water added by the water addition device;
- and
- a control device configured to control the water addition device to adjust an addition amount of water to the nitrate salt bath, based on the signal output from the humidity sensor of the humidity detection device.
A salt-bath heat treatment apparatus for performing a heat treatment of a metal member using a salt bath, the salt-bath heat treatment apparatus comprising:
- a salt bath tank which accommodates a nitrate salt bath including a molten nitrate salt to cool the metal member under an isothermal heat treatment;
- a water addition device for adding water to the nitrate salt bath in the salt bath tank;
- a water content rate estimation device configured to estimate a water content rate of the nitrate salt bath with water added by the water addition device;
- and
- a control device configured to control the water addition device to adjust an addition amount of water to the nitrate salt bath, based on the water content rate estimated by the water content rate estimation device.
Dependencies are inferred from the claim text.