High-performance flange shaft

A flanged shaft, high-performance technology, used in shafts, shafts and bearings, mechanical equipment, etc., can solve the problems of unsatisfactory flanged shaft performance, flanged shaft out-of-round deformation, low qualification rate, etc., and achieve simple heat treatment steps. , Reduce the temperature difference, the effect of short production cycle

Inactive Publication Date: 2015-04-22
WUHU JINLONG MOLD FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the flange shaft prepared by the traditional process, such as unsatisfactory performance, serious out-of-round deformation, and low pass rate, and provide a high-performance flange shaft; the present invention distributes the chemical composition of the flange shaft Compared with the improvement of the preparation process, the structure uniformity of the flange shaft is increased, the hardness drop is small, the wear resistance is better, the problem of out-of-round deformation of the flange shaft is effectively improved, and the production qualification rate is improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The composition of the flange shaft in this embodiment is preferably: C 2.5%; Si 1.6%; Mn 0.5%; P 0.05%; S 0.03%; Cr 3.8%; Ni 0.11%; B 1.0%; N 0.4%; %; Al 0.14%; Zr 0.08%; Mo 0.19%; Cu 0.12%; V 0.5%; Ti 0.14%; the balance is Fe and unavoidable impurities.

[0044] The preparation steps of the flange shaft of the present embodiment are:

[0045] Step 1: Melting is carried out according to the distribution ratio of chemical elements, and the flange shaft casting slab is cast.

[0046] Step 2. Anneal the flange shaft. The specific annealing process is as follows: heat the flange shaft to 900°C for 3 hours, cool in the furnace to 735°C, hold for 5 hours, then cool to 500°C and air-cool the flange. The shaft is roughed. In this embodiment, the flange shaft is annealed first, and the heating temperature is controlled between 890°C and 910°C, the purpose of which is to improve the machining performance of the flange shaft and increase the efficiency of rough machining the fl...

Embodiment 2

[0058] A high-performance flange shaft in this embodiment is basically the same as in Embodiment 1, except that the mass percentage of chemical elements in the flange shaft in this embodiment is as follows: C 2.2%; Si 0.7%; Mn 0.7%; P 0.04%; S 0.03%; Cr 4.2%; Ni 0.08%; B 1.3%; N 0.24%; Mg 0.11%; Al 0.06%; Zr 0.1%; Mo 0.15%; Cu 0.10%; %; Ti 0.2%; the balance is Fe and unavoidable impurities. The specific annealing process of Step 2 in the preparation process is as follows: heat the flange shaft to 890°C for 2 hours, cool it in the furnace to 720°C, hold it for 4 hours, then cool it to below 500°C and take it out of the furnace for air cooling, and then rough machine the flange shaft ; The first section of step three is heated to 700°C with the furnace, and the second section is heated to 1020°C; the thickness of the nano-ceramic coating in step five is 1.5mm.

Embodiment 3

[0060] A high-performance flange shaft in this embodiment is basically the same as in Embodiment 1, except that the mass percentage of chemical elements in the flange shaft in this embodiment is as follows: C 2.8%; Si 2.3%; Mn 0.3%; P 0.05%; S 0.03%; Cr 3.4%; Ni 0.14%; B 0.7%; N 0.4%; Mg 0.07%; Al 0.2%; Zr 0.05%; Mo 0.14%; Cu 0.20%; %; Ti 0.08%; the balance is Fe and unavoidable impurities. The specific annealing process of Step 2 in the preparation process is as follows: heat the flange shaft to 910°C for 4 hours, cool in the furnace to 760°C, hold for 6 hours, and then cool the furnace to below 500°C and leave the furnace for air cooling, and then rough machine the flange shaft ; The first section of step three is heated to 650°C with the furnace, and the second section is heated to 960°C; the thickness of the nano-ceramic coating in step five is 2mm.

[0061] A high-performance flange shaft described in Examples 1 to 3 achieves the purpose of refining the internal grains o...

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Abstract

The invention discloses a high-performance flange shaft, and belongs to the technical field of flange shaft preparation. Based on conventionally adding Cr, Mn and Ni, N, Al, Zr and other elements are further added by starting from the angle of improving the flange shaft microhardness and refining the flange shaft grains to refine the flange shaft structure. The high-performance flange shaft is prepared by the following steps: casting a casting blank according to the proportion of chemical element components; annealing the flange shaft; stepwise heating the flange shaft by adopting a vacuum gas quenching furnace; introducing argon into the vacuum gas quenching furnace to quickly cool the flange shaft; and putting the flange shaft in a controlled-cooling device to control rotation of the flange shaft, coating a nano-ceramic coating to the surface of the flange shaft, discharging when the surface temperature of the flange shaft is lower than 150 DEG C, cooling in the air, and refining. The high-performance flange shaft can be used for improving the structure homogeneity, has small hardness drop and good abrasion resistance, and can be used for effectively improving the problem of out-of-round deformation of the flange shaft and improving the production yield.

Description

technical field [0001] The invention relates to the technical field of preparation of flange shafts, in particular to a high-performance flange shaft. Background technique [0002] Flange shafts are suitable for all kinds of industrial equipment, ranging from small office equipment such as printers and fax machines to large rotary motors and automobile gearboxes. The working condition of the flange shaft is very complicated, and it will be subjected to various periodic stress interactions such as bending, torsion, vibration, friction and thermal stress during the working process. Therefore, if one wants to improve the use effect and service life of the flange shaft, it is required that the structure of the flange shaft is more uniform, the hardness difference is small, and the wear resistance is better. However, the flange shaft prepared by the existing technology cannot achieve the desired effect. . [0003] In addition, after quenching, the flange shaft prepared by the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/56F16C3/02
Inventor 李大志
Owner WUHU JINLONG MOLD FORGING
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