stivali ugg 2A50 aluminum alloy rod extrusion proc

2A50 aluminum alloy rod of the anti-extrusion process

Therefore, the mill of any size can be made of high strength,[link widoczny dla zalogowanych], high hardness and low toughness of the lining without worries of running,[link widoczny dla zalogowanych], especially valuable in the coarse positions. (4) in the lining of the groove, and all the different levels accommodates both easy to fall off some of the material into the feed pad,[link widoczny dla zalogowanych], separated from the ball and lining. This separation effect, firstly, to increase the chance of material being ground, the second is to reduce the ball on the liner air strike, grinding and chiseling the chance. Is a direct result of the consumption of grinding balls and lining greatly reduced, so that the lining of the service period extended. (5) the ball and groove lining material from the point of view has been increased (from 55. Increased to 60..) This indicates that the slide on the ball in the liner capacity increases, the stack height reduced,[link widoczny dla zalogowanych], resulting in the load center of gravity down the mill, torque decreases, thereby reducing the driving power. 2 trench liner manufacturing (1) chemical composition of the steel liner material is diverse, mainly composed of low, medium carbon, chrome, nickel (wet mill), and a number of micro alloying elements. (2) casting process (to 2.7m mill liner for example) the quality of castings 30 \Straight groove width lining 45 \; - \12. . Casting system for the semi-closed. F straight; F inlay: F in a 1.1:1.3; 1.0. Sand box and the ground was 5. 8. Slope. Sprue in high places. Due to a uniform thickness no riser outlet on the box set a number of wedge-shaped riser. (3) quenching and tempering heat treatment temperature, cooling medium is air. The microstructure after heat treatment for the small amount of martensite + lower bainite + carbide and retained austenite. Properties: hardness of 50 \. The trench liner is the second cement plant in Dalian, Jiuquan Iron and Steel Company and other business machines, running in good condition. 1.1 (continued on page 50) gold, in order to study the state and the deformation of billet extrusion process and mechanical properties of extrusion, respectively, the original cast and extruded billet deformation under different deformation comparison was tested, and strengthened by heat treatment of extruded shank were measured mechanical properties of the test data in Table 1. Table 1,[link widoczny dla zalogowanych], extrusion billet different states of the mechanical properties of deformed shank diameter before and after the maximum deformation hardness of the extrusion force numbered blank stare 6 state / ram /% / kN / HB / MPa /% 190/41792300124480122 extruded 90/358525001184501539o/3o89300012O44O16490 / 4179200011843O115 cast 90/3585240011348012690/3089280011443O12 comparative analysis shows: rough-cast and extruded in the extrusion blank no significant difference in performance when the deformation, extrusion forming of the extrusion pressure of rough slabs slightly larger than this and two blank level and the surface of dense attachment of the ability of the lubricant; With the increase of deformation, two blank extrusion pressure are slightly increased, indicating that the deformation is one of the factors affect the extrusion pressure. Use the same heat treatment (520 ℃ +160 ℃ × 8h aging quenching) treatment, two billet extrusion rod hardness and strength of the Ministry of no significant differences, extrusion billet slightly higher than the slab; and elongation, significantly greater than rough cast extrusion billet. Performance index can meet the three parts of the technical requirements. 3 Conclusion (1) The production of anti-extrusion process to take the lead Department of 2A50 alloy rods, mold structure is simple, versatile, easy to operate process and extrusion pressure is small, especially for large deformation, the pole pieces of extrusion . (2) the state of extrusion billet extrusion forming and heat treatment on the mechanical properties after the little piece of the performance index can meet the technical requirements of parts, it can be rough as cast extrusion billet replacement rough, to further reduce costs. (3) extrusion of the shank end of the first part of the deformation when the small cast can not be completely eliminated, so the mechanical properties compared with the shank central quite different. Ministers recommended increasing the degree of the direction of bars allowance method, try this resection. . . 1 Welcome Welcome Cigao provide advertising and subscription

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