A rolled steel integral wheel for rail vehicles and a preparation process thereof
A technology of rail vehicle and preparation process, applied in the field of rail vehicle, can solve the problems of complex processing technology, high transfer requirements, influence, etc., and achieve the effects of improving safety performance, solving high cost and reducing cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Rolled steel monolithic wheels for rail vehicles, such as figure 1 As shown, it includes a wheel core 1 and a rim 2 integrally formed with the wheel core 1. The wheel core 1 includes a sub-plate 11 and a rim 12 integrally connected and fixed to one end of the sub-plate 11. The rim 2 is integrally sleeved and fixed on the rim 12. The outer surface of the side wall of the wheel; by integrally forming the wheel core and the tire, it solves the problem that the existing wheel core and the tire are connected and fixed through the buckle ring, and the wheel core and the wheel hub are caused by the buckle falling off or worn out during the long-term use of the wheel. The detachment of the hoop will cause accidents;
[0030] The outer surface of the bottom side wall of the tire 2 is integrally connected and fixed with a tread 21. The tread 21 adopts an LM wear type tread. The tread 21 includes a bottom joint 211 in the same plane as the bottom of the tire 2. The bottom joint 21...
Embodiment 2
[0034] The preparation process of the rolled steel integral wheel is as follows:
[0035] The first step is to take a certain amount of pure iron and smelt it into molten iron in an electric furnace;
[0036] In the second step, the molten iron obtained in the first step and the discarded steel materials are put into the converter together, and smelted at 1650°C for 3-4 hours. The content of oxygen in the molten steel during the process can effectively prevent the appearance of cracks in the finished steel. The content of sulfur in the molten steel obtained after the initial smelting is less than or equal to 0.05% of the weight of the molten steel. The mass ratio of molten iron to scrap steel is 1 : 0.11-0.13;
[0037] The third step is to keep the temperature constant, add manganese, aluminum and ferroalloy to the primary molten steel, and after smelting for 15 minutes, remove the oxygen in it, and add a compound refining agent to the converter at the same time, refining for...
Embodiment 3
[0044] Carry out the low-magnification structure test to the wheel produced in embodiment 2, the result shows that there are no white spots, shrinkage cavity residues, delamination, cracks, skin turning and metal foreign matter on the low-magnification test piece of the wheel;
[0045] At the same time, test the non-metallic inclusions on the wheel. The test results of each type of non-metallic inclusions in the three samples of the rim are as follows: alumina inclusions are not greater than level 1; sulfide inclusions and silicate inclusions are not greater than level 3;
[0046] Carry out magnetic particle flaw detection on the wheel, and the surface with a depth exceeding 0.38mm and a length exceeding 6.35mm has no continuous defects;
[0047] The wheels prepared in Example 2 were tested for mechanical properties, and 3 were selected for testing in each batch during the testing process, and the results are shown in Table 1;
[0048] Table 1: Test results of wheel mechanical p...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More