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Water-gas dual-sealing heat treatment atmosphere furnace

A water-sealed and double-sealed technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of low operation efficiency, high cost, matching and other problems, and achieve strong equipment scalability, improved production efficiency, and fast furnace installation. Effect

Inactive Publication Date: 2017-07-25
南通万达能源动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are one or several deficiencies in the heat treatment that can be carried out by various heat treatment manufacturers and heat treatment furnace manufacturers in the market, and the atmosphere furnaces produced, which limit the production and application; Heat treatment; workpieces exceeding 3 meters cannot be loaded into the furnace, and customized furnace models cannot meet the requirements of workpiece size and shape diversity; furnace loading operations and sealing of workpieces one by one are complicated and slow, and the operation efficiency is low. Usually, only one furnace can only be heat treated The ends of about 100 workpieces cannot effectively match the fast-paced production and cannot meet the needs of mass production; the sealing silica gel customized for heat treatment at high temperature has high cost and is for one-time use. For future use and consumption of mass products, high cost

Method used

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  • Water-gas dual-sealing heat treatment atmosphere furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The heat treatment process steps of the water-air double-sealed heat treatment atmosphere furnace for 20G steel pipes are:

[0039] 1. Put 20G steel pipes into the electric heating furnace 15 one by one to ensure that the length and distance of the 20G steel pipes in the electric heating furnace 15 meet the heat treatment requirements, and place insulation cotton 20 between the layers of the workpiece.

[0040] 2. Bind and fix the thermocouple 14 on the 20G steel pipe, plug all the gaps tightly with insulation cotton 20, and close the 15 doors of the electric heating furnace.

[0041] 3. Water is poured into the sealing groove of the water-seal base 7, and then the end of the water-seal case 8 is placed in the seal groove, and the water-seal base 7 and the water-seal case 8 form a sealed space.

[0042]4. After the liquid protective gas in the liquid gas cylinder 1 is vaporized, it enters the sealed space formed by the water-sealed base 7 and the water-sealed casing 8 t...

Embodiment 2

[0048] The heat treatment process steps of the water-gas double-sealed heat treatment atmosphere furnace for 12Cr1MoVG steel pipe are:

[0049] 1. Put the 12Cr1MoVG steel pipes into the electric heating furnace 15 one by one to ensure that the length and distance of the 12Cr1MoVG steel pipes in the electric heating furnace 15 meet the heat treatment requirements, and place insulation cotton 20 between the layers of the workpiece.

[0050] 2. Bind and fix the thermocouple 14 on the 12Cr1MoVG steel pipe, plug all the gaps tightly with insulation cotton 20, and close the 15 doors of the electric heating furnace.

[0051] 3. Water is poured into the sealing groove of the water-seal base 7, and then the end of the water-seal case 8 is placed in the seal groove, and the water-seal base 7 and the water-seal case 8 form a sealed space.

[0052] 4. After the liquid protective gas in the liquid gas cylinder 1 is vaporized, it enters the sealed space formed by the water-sealed base 7 and...

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Abstract

The invention discloses a water-gas dual-sealing heat treatment atmosphere furnace. The water-gas dual-sealing heat treatment atmosphere furnace comprises a liquid gas cylinder, a safety valve, an emptying valve, a pressure reducing valve, a hose, a distribution pipe, a water sealing base, a water sealing cover shell, control valves and oxygen amount monitors, and further comprises a gas sealing electric heating atmosphere device; the gas sealing electric heating atmosphere device comprises cylinder bundles, gas conveying pipes, a thermocouple, an electric heating furnace control cabinet, and electric heating furnaces; the cylinder bundles are arranged outside the sealed space formed by the water sealing base and the water sealing cover shell, and connected with the electric heating furnaces through the gas conveying pipes; and the electric heating furnaces are arranged on the water sealing base and connected with one end of the thermocouple, and the other end of the thermocouple is connected with the electric heating furnace control cabinet. Through the water-gas dual-sealing heat treatment atmosphere furnace, the effect that the whole treatment process is in a protective gas atmosphere is ensured, and oxidation of a workpiece in the heat treatment process is effectively and completely eradicated.

Description

technical field [0001] The invention relates to a heat treatment process, in particular to a water-air double-sealed heat treatment atmosphere furnace and a heat treatment process. Background technique [0002] In the prior art, the boiler body parts of various boiler manufacturers are mostly connected by welding at the construction site. Whether in the factory or at the construction site, the heat treatment is mostly aimed at removing welding stress. The best time is also after welding. [0003] For a small number of special boilers, due to design requirements and restrictions on installation and use occasions, some of their parts must be connected in the form of expansion joints at the construction site. At this time, there are additional requirements for the hardness of the two connected workpieces: The hardness of the designated area of ​​the expanded workpiece should be lower than the hardness of the main workpiece, and within the specified range, neither too high nor ...

Claims

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Application Information

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IPC IPC(8): C21D1/74C21D9/00
CPCC21D1/74C21D9/00
Inventor 刘甦施金铜蔡建
Owner 南通万达能源动力科技有限公司
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