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A circular chain heat treatment device and its application method

A technology of heat treatment device and circular chain, applied in heat treatment furnace, heat treatment equipment, quenching device, etc., can solve problems such as difficulty in meeting the requirements of hardness and strength of circular chain, fine austenite grains, long heating cycle, etc. , to achieve the effect of high work efficiency, high wear resistance and bearing capacity, and elimination of internal stress

Active Publication Date: 2017-10-17
SHANDONG LUNAN GRP ENERGY EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the heating furnaces for heat treatment of circular link chains generally have the problems of long heating period, low efficiency, and difficulty in obtaining very fine austenite grains, and it is difficult to meet the hardness and strength requirements of various parts of the circular link chain.

Method used

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  • A circular chain heat treatment device and its application method
  • A circular chain heat treatment device and its application method
  • A circular chain heat treatment device and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 , Figure 5 As shown, a heat treatment device for a circular link chain includes a quenching part 1 and a tempering part 2 arranged in sequence. The quenching part 1 and the tempering part 2 are all provided with a cooling part 3, which can complete the circular chain at one time. Advanced heat treatment process, high degree of integration, high work efficiency.

[0042] The quenching part 1 is provided with a quenching temperature regulating box 7, and a preheating heating box 5 and an austenitizing heating box 6 are arranged in sequence before the quenching temperature regulating box 7, and the circular link chain 16 is installed in the preheating heating box 5. When the austenitizing heating box 6 moves at a constant speed, it is continuously heated. Due to the characteristics of induction hardening, when the temperature is high, the temperature of the straight arm 161 of the circular link chain 16 is much lower than the temperature of the shoulder ...

Embodiment 2

[0047] Such as figure 1 , Figure 5 As shown, the tempering section 2 is sequentially provided with a uniform temperature tempering heating box 8, at least one tempering temperature regulating box 9, and a differential temperature tempering heating box 10, and the uniform temperature tempering heating box 8 ensures that the circular chain The shoulder top 162 is fully tempered at the set temperature, which helps to eliminate internal stress, and promotes the shoulder top 162 of the round chain link to have higher wear resistance and load carrying capacity. The set temperature of the tempering temperature regulating box 9 350-400°C, between the uniform temperature tempering heating box 8 and the differential temperature tempering heating box 10, there are 4-6 tempering temperature regulating boxes 9, and along the moving direction of the circular chain, Adjacent tempering temperature control boxes 9 are connected in sequence, which helps to reduce the contact time between the ...

Embodiment 3

[0054] In this embodiment, the specification of the circular link chain 16 is Φ38mm×137mm, and the number of the tempering temperature control boxes 9 is set to 4, and the heat treatment of the circular link chain 16 includes the following steps:

[0055] (1) Connect the round link chain 16 with the traction chain, and pass the traction chain through the quenching part 1 and the tempering part 2 sequentially through the transmission part, start the control part 13, and preheat the quenching and tempering box 7 To 950°C, preheat the tempering temperature control box 9 to 350°C, 370°C, 390°C, 400°C in sequence;

[0056] (2) Under the cooperation of the driving guide sprocket 11 and the driven guide sprocket 12, the circular link chain 16 moves at a constant speed under the traction of the traction chain;

[0057] (3) The circular link chain 16 enters the preheating heating box 5 and the austenitizing heating box 6 successively for heating, and the heating time is respectively 1....

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Abstract

The invention discloses a heat treatment device for a round-link chain and an application method thereof. The device comprises a quenching part and a tempering part which are sequentially arranged, wherein first cooling parts are arranged at the quenching part and the tempering part; the quenching part is provided with a quenching temperature regulating box; the tempering part is sequentially provided with an uniform-temperature tempering heating box, at least one tempering temperature regulating box and a differential-temperature tempering heating box; the quenching temperature regulating box is provided with a second cooling part. The device has the characteristics of being high in integration degree and high in working efficiency; after the round-link chain is quenched, an uniform and small low-carbon lath martensite structure can be obtained; the quenching quality is high; the second cooling part and the first cooling parts are correspondingly connected to a cooling source, so that the cooling quality can be improved, and the requirements of each part of the round-link chain on hardness and toughness can be met.

Description

technical field [0001] The invention relates to the technical field of coal mine equipment manufacturing technology, in particular to a circular chain heat treatment device and a use method thereof. Background technique [0002] With the development of mechanized coal mining technology, large and heavy equipment such as mining scraper conveyors and loaders have been widely used. The most used core components of these equipment are circular link chains. The quality and performance of circular link chains are excellent. Inferiority directly affects the working efficiency of the equipment and the coal output of the coal mine. [0003] Mining circular link chains have mainly experienced the development stages of steel for mining circular link chains, heat treatment technology, ring size and shape optimization, different chain designs, and chain-making technologies, which have promoted the mechanical properties and reliability of mining circular link chains. has achieved conside...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/00C21D1/667C21D1/18
CPCC21D1/18C21D1/667C21D9/0087C21D2211/008
Inventor 刘春利石虎周保平程召汉孙儒张庆敏付轶虎田霜陈琥宋承军
Owner SHANDONG LUNAN GRP ENERGY EQUIP MFG
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