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Spring steel material for elevator and preparation method of spring steel material

A spring steel and elevator technology, applied in the field of spring steel materials and their preparation, can solve problems such as the performance decline of spring steel and loss of effective components, and achieve the effects of reducing quenching cracking, uniform performance, and improving toughness and elasticity.

Inactive Publication Date: 2015-06-24
SUZHOU MAYFORD ELEVATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The mechanical properties of spring steel mainly depend on the heat treatment process, and the heat treatment process is mainly determined by the materials used. One factor for the high strength of spring steel is to give full play to the role of alloy elements, so as to achieve better results. The existing heat treatment process is due to the If the time at high temperature is too long, it will cause the loss of active ingredients, so that the properties of the obtained spring steel will be reduced in all aspects.

Method used

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  • Spring steel material for elevator and preparation method of spring steel material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Iron powder 87kg, Mn1.1kg, Cr 0.9kg, B 2 o 3 0.2kg, Nb0.02kg and tourmaline powder 0.02kg, add water, put into ball mill for ball milling, dry, press into block under 10Mpa pressure, then sinter at 90℃ for 2 hours under nitrogen protection atmosphere, the sintered The material is crushed and passed through a 250-mesh sieve;

[0028] (2) 2 kg of polyacrylonitrile-based carbon fibers with a diameter of 8.9 microns are added to the product of step (1), heated at 65° C., and mixed uniformly at a speed of 500 rpm;

[0029] (3) Put the mixture in step (2) into a mold, press it into a compact, place the compact in a sintering furnace, heat up to 400°C at a rate of 20°C / min and sinter for 2 hours;

[0030] (4) The product in step (3) was sintered at a rate of 10°C / min to 1075°C for 1 hour, and finally placed in air and cooled to room temperature to obtain a spring steel material for elevators.

[0031] The performance test results of the prepared spring steel materials a...

Embodiment 2

[0033] (1) Iron powder 87kg, Mn1.5kg, Cr 0.9kg, B 2 o 3 0.5kg, Nb0.02kg and tourmaline powder 0.02kg, add water, put into ball mill for ball milling, dry, press into block under 10Mpa pressure, then sinter at 900℃ for 2 hours under nitrogen protection atmosphere, the sintered The material is crushed and passed through a 250-mesh sieve;

[0034] (2) 2 kg of polyacrylonitrile-based carbon fibers with a diameter of 8.9 microns are added to the product of step (1), heated at 65° C., and mixed uniformly at a speed of 500 rpm;

[0035] (3) Put the mixture in step (2) into a mold, press it into a compact, place the compact in a sintering furnace, heat up to 400°C at a rate of 20°C / min and sinter for 2 hours;

[0036] (4) The product in step (3) was sintered at a rate of 10°C / min to 1075°C for 1 hour, and finally placed in air and cooled to room temperature to obtain a spring steel material for elevators.

[0037] The performance test results of the prepared spring steel materials ...

Embodiment 3

[0039] (1) Iron powder 93.5kg, Mn1.5kg, Cr 1.2kg, B 2 o 3 0.5kg, Nb0.8kg, tourmaline powder 0.08kg, La 2 o 3 1.1kg and sodium metasilicate 0.1kg, add water, put into ball mill for ball milling, dry, press into block under 12Mpa pressure, and then sinter at 1000℃ for 3 hours under nitrogen protection atmosphere, crush the sintered material Pass through a 300-mesh sieve;

[0040] (2) 3 kg of polyacrylonitrile-based carbon fibers with a diameter of 7.1 microns were added to the product of step (1), heated at 55° C., and mixed uniformly at a speed of 600 rpm;

[0041] (3) Put the mixture in step (2) into a mold, press it into a compact, place the compact in a sintering furnace, heat up to 400°C at a rate of 20°C / min and sinter for 1 hour;

[0042] (4) The product in step (3) was sintered at a rate of 10°C / min to 1160°C for 1.5 hours, and finally placed in air and cooled to room temperature to obtain a spring steel material for elevators.

[0043] The performance test results ...

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Abstract

The invention discloses a spring steel material for an elevator and a preparation method spring steel material. The spring steel material for the elevator comprises the following components in parts by weight: 87-93.5 parts of iron, 2-3 parts of polyacrylonitrile-based carbon fiber, 1.1-1.5 parts of Mn, 0.9-1.2 parts of CrO, 0.2-0.5 part of B2O3, 0.02-0.8 part of Nb and 0.02-0.08 part of electric rock flour. The invention further provides a preparation method of the spring steel material for the elevator.

Description

technical field [0001] The invention belongs to the field of materials for elevators, in particular to a spring steel material used for elevators and a preparation method thereof. Background technique [0002] Spring steel is a special steel that has good elasticity and can work repeatedly under dynamic load conditions. It has sufficient toughness, mechanical strength and plasticity, and can perform repeated expansion and contraction. Sudden brittle fracture, so it is mostly used to make steel for springs and elastic components. The elasticity of spring steel depends on its ability of elastic deformation, that is, within the specified range, the ability of elastic deformation makes it bear a certain load, and no permanent deformation occurs after the load is removed. At the same time, spring steel also needs a certain mechanical strength, so that it can not cause plastic deformation when bearing heavy loads, has high fatigue strength, and has a long service life under load....

Claims

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Application Information

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IPC IPC(8): C22C49/08C22C49/14C22C47/14C22C101/10
Inventor 葛晓东王应
Owner SUZHOU MAYFORD ELEVATOR
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