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Heat treatment process for rotary chain

A process and heating furnace technology, applied in the field of elevators, can solve problems such as the normal operation and service life of the slewing chain, uncontrollable frequency of refueling, lack of oil in rolling bearings, etc., to achieve the effects of ensuring performance, shortening heat preservation time, and improving strength

Inactive Publication Date: 2017-05-31
QINGDAO XIUPOER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The slewing chain is a common part of the escalator. At present, the slewing chain is connected by rolling bearings at the joints. The rolling bearings all need lubricating oil to assist their work. Due to the limitation of the workplace, the frequency of refueling is uncontrollable, which will lead to the loss of the slewing chain rolling bearings. Oil, wear and damage appear, which has a serious impact on the normal operation and service life of the slewing chain

Method used

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Embodiment Construction

[0009] A rotary chain heat treatment process, comprising the following steps: heating each chain part of the rotary chain in a heating furnace to 940-950°C for 10-15 minutes, then continuing to heat to 1035-1060°C, and keeping it warm at this temperature After 15 minutes, the parts of the rotary chain are quenched.

[0010] The quenching treatment is a single liquid quenching treatment.

[0011] The single-liquid quenching treatment includes the following steps: first place the revolving chain parts in the air for 1-3 minutes, and then place them in water for quenching.

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PUM

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Abstract

The invention discloses a heat treatment process for a rotary chain. The heat treatment process comprises the following steps of putting all chain portions of the rotary chain into a heating furnace, and conducting heating till the temperature of 940-950 DEG C is reached; conducting preheating for 10-15 minutes; then continuing heating till the temperature of 1035-1060 DEG C is reached, and preserving the heat for 15 minutes at the temperature; and then conducting quenching treatment on components of the rotary chain. By means of the heat treatment process, surface strength and abrasion resistance of the rotary chain are improved; the service life is prolonged; in addition, heat preservation time is shortened; energy consumption is saved while performance is guaranteed; cost is saved; and environmental protection is achieved.

Description

technical field [0001] The invention relates to a heat treatment process for a revolving chain, in particular to a heat treatment process for revolving chain components in the field of elevators. Background technique [0002] The slewing chain is a common part of the escalator. At present, the slewing chain is connected by rolling bearings at the joints. The rolling bearings need lubricating oil to assist in their work. Due to the limitation of the workplace, the frequency of refueling is uncontrollable, which will lead to the loss of the slewing chain rolling bearings. Oil, wear and damage appear, which has a serious impact on the normal operation and service life of the slewing chain. Contents of the invention [0003] The invention aims at the deficiencies of the prior art, and provides a rotary chain heat treatment process for improving strength and wear resistance. [0004] The present invention is realized through the following technical solutions: [0005] A rotar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/18
CPCC21D9/0087C21D1/18
Inventor 王爱红
Owner QINGDAO XIUPOER TECH CO LTD