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Tempering furnace achieving vacuum gas quenching

A vacuum air quenching and tempering furnace technology, applied in the field of boiler equipment, can solve the problems of high requirements for heating elements and cooling materials, high cost, and high price, and achieve the effects of long service life, simple structure, and improved production efficiency

Inactive Publication Date: 2018-02-02
JIANGSU RUIZHI MEDICAL INSTR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of a 150KW, 70V transformer is about 40,000 yuan, which is expensive
Moreover, in a vacuum state, the requirements for heating elements and cooling materials are relatively high, and the cost is also high, so the current vacuum tempering furnace is expensive

Method used

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  • Tempering furnace achieving vacuum gas quenching

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Effect test

Embodiment Construction

[0009] Depend on figure 1 As known, a vacuum air-quenched tempering furnace is composed of a furnace body 1, an inner tank 2 and a furnace cover 3. The furnace body 1 includes a furnace base 4, a furnace shell 5 and a furnace lining 6, and the furnace shell 5 is fixed on the furnace On the base 4, the furnace shell 5 has a furnace surrounded by a furnace lining 6, and the inner tank 2 is arranged in the furnace, and the bottom of the furnace is fixed with refractory bricks, and a barrel-shaped stainless steel inner tank 2 is fixed on the refractory bricks. With the opening facing upwards, high-strength refractory bricks have sufficient strength to withstand pressure and have good high-temperature resistance. The furnace cover 3 is fixedly equipped with a fan device 7, a hanger 8, a manual valve 9, a protective gas pipe 11, and a vacuum tube 12. For opening and closing the furnace cover 3 and the furnace body 1, a sealing ring is provided between the furnace cover 3 and the in...

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PUM

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Abstract

A vacuum air-quenched tempering furnace, including a furnace body, an inner tank and a furnace cover, the furnace body includes a furnace base, a furnace shell and a furnace lining, the furnace shell is fixed on the furnace base, and the furnace shell is surrounded by a furnace lining The finished furnace, the liner is set in the furnace, the furnace is fixed around the bracket, the electric heating element is fixed on the bracket; the fan device, the hanger, the manual valve, the filling and protective gas pipe, the pump are fixed on the furnace cover. The vacuum tube is characterized in that: the vacuum tube is provided with a solenoid valve. The invention has the advantages of simple structure, reasonable design, good temperature uniformity of the whole furnace, no oxide skin on the annealed workpiece, rapid cooling after heating, greatly improved production efficiency and long service life.

Description

technical field [0001] The invention relates to boiler equipment, in particular to a tempering furnace for vacuum air quenching. technical background [0002] The current vacuum tempering furnace generally adopts internal heat heating in a vacuum state. Since the high voltage will cause discharge and arc breakdown during vacuum heating, a transformer must be used to reduce the voltage. The price of a 150KW, 70V transformer is about 40,000 yuan, which is expensive. Moreover, in a vacuum state, the requirements for heating elements and cooling materials are relatively high, and the cost is also high, so the current vacuum tempering furnace is expensive. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a tempering furnace for vacuum air quenching. After the workpiece is loaded into the furnace, the furnace door is closed and the vacuum unit is used for vacuuming. After the vacuum degree reaches the requiremen...

Claims

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Application Information

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IPC IPC(8): C21D1/18C21D1/773
CPCC21D1/18C21D1/773
Inventor 李永君
Owner JIANGSU RUIZHI MEDICAL INSTR TECH CO LTD
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