Heat treatment device for round-link chain and application method thereof

A technology for heat treatment devices and circular chains, applied in heat treatment furnaces, heat treatment equipment, quenching devices, etc., can solve problems such as difficulty in meeting the hardness and strength requirements of circular chains, fine austenite grains, long heating cycles, etc. , to achieve high working efficiency, high wear resistance and bearing capacity, and eliminate internal stress

Active Publication Date: 2016-02-24
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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  • Heat treatment device for round-link chain and application method thereof
  • Heat treatment device for round-link chain and application method thereof
  • Heat treatment device for round-link chain and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 , Figure 5 As shown, a toroidal chain heat treatment device 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 toroidal chain at one time The heat treatment process has a high degree of integration and high work efficiency.

[0042] The quenching part 1 is provided with a quenching temperature control box 7, and in front of the quenching temperature control box 7, a preheating heating box 5 and an austenitizing heating box 6 are successively provided. The ring 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 induction hardening characteristics, the temperature of the straight arm 161 of the ring chain 16 is much lower than the temperature of the shoulder top 162 at high temperature, and the temperature difference will af...

Embodiment 2

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

Embodiment 3

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

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

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

[0057] (3) The ring chain 16 enters the preheating heating box 5 and the austenitizing heating box 6 for heating in turn, the heating time is 1.5min respectively, and then enters the quenching temperature control box 7 for temperature adjustm...

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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 transfer machines have been widely used. The core components of these equipment are the ring chain, which has excellent quality and performance. Inferiority directly affects the working efficiency of the equipment and the coal output of the coal mine. [0003] Mining round link chains have mainly undergone mining round link chain steel, heat treatment technology, ring size and shape optimization, different chain designs, and chain-making technology development stages, which promote the mechanical properties and reliability of mining round link chains Has been greatly improved. [0004] The metal material used in the round link chain is h...

Claims

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Application Information

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Patent Type & Authority Applications(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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