Preparation method of barrel-shaped ZL208 alloy

A barrel type and alloy technology, which is applied in casting molding equipment, metal processing equipment, cores, etc., can solve the problems of segregation and other problems in castings, and achieve the effect of facilitating the floating of impurities, good sequence solidification trend, and not easy to entrain gas

Pending Publication Date: 2022-06-21
赛普工业研究院(安阳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] This application provides a method for preparing a barrel-shaped ZL208 alloy to solve the problem that segregation is prone to occur on castings using the existing casting ZL208 material

Method used

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  • Preparation method of barrel-shaped ZL208 alloy
  • Preparation method of barrel-shaped ZL208 alloy
  • Preparation method of barrel-shaped ZL208 alloy

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preparation example Construction

[0038] The embodiment of the present application provides a preparation method of a barrel-shaped ZL208 alloy, comprising the following steps:

[0039] Step S1: making a barrel-shaped wax piece, the barrel-shaped wax piece has a first end and a second end; performing wedge-shaped process compensation on the inner cavity of the barrel-shaped wax piece, so that the inner cavity of the barrel-shaped wax piece is The diameter first increases and then gradually decreases from the first end to the second end;

[0040] Step S2: prepare and assemble a pouring system according to the product combination process requirements; the pouring system is a bottom pouring pouring system;

[0041] Step S3: making a mold shell, the top end of the mold shell corresponds to the first end of the barrel-shaped wax piece, and the bottom end of the mold shell corresponds to the second end of the barrel-shaped wax piece;

[0042] Step S4: preheating the mold shell; refining the molten aluminum to obtai...

Embodiment 1

[0071] The requirements for a barrel type ZL208 alloy are as follows:

[0072] Casting material: ZL208 (ZAlCu5Ni2CoZr), according to HB962-2001 (see Table 2); the allowable content of impurities is shown in Table 3;

[0073] Table 2 Chemical composition

[0074]

[0075] Table 3 allowable content of impurities

[0076]

[0077] Casting category: HB963-2005-Ⅱ.

[0078] Casting size and shape: according to the casting drawing, the unmarked size tolerance is implemented in accordance with HB6103-2004 CT6 level, and the unmarked casting fillet R1~R5;

[0079] Mechanical properties of castings: yield strength ≥ 210MPa; hardness HB85-110;

[0080] Casting profile: φ350 (outer diameter)*250mm, skin wall thickness 6mm. End ring thickness 17mm;

[0081] Casting weight: 6.8kg;

[0082] This product is a typical non-uniform wall barrel casting. The casting requires fluorescence and X-ray detection, and requires a leakage test under 0.6MPa, and the pressure is maintained for 1...

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Abstract

The invention relates to the technical field of casting, in particular to a barrel-shaped ZL208 alloy preparation method which comprises the steps that a barrel-shaped wax piece is manufactured, and the barrel-shaped wax piece is provided with a first end and a second end; wedge-shaped process compensation is conducted on an inner cavity of the barrel-shaped wax piece, so that the diameter of the inner cavity of the barrel-shaped wax piece is increased firstly and then gradually decreased from the first end to the second end; preparing and assembling a pouring system according to the requirements of a product combination process; the pouring system is a bottom pouring type pouring system; a mold shell is manufactured, the top end of the mold shell corresponds to the first end of the barrel-shaped wax piece, and the bottom end of the mold shell corresponds to the second end of the barrel-shaped wax piece; the mold shell is preheated; refining the molten aluminum to obtain pouring liquid; pouring the pouring liquid from the bottom end of the mold shell to the top end of the mold shell through a pouring system; after pouring is completed, the mold shell is turned over by 180 degrees; and the overturned mold shell is put into a pressure tank to be subjected to pressure solidification. The preparation method provided by the invention can solve the problem that a segregation phenomenon is easy to occur on an existing casting made of a pouring ZL208 material.

Description

technical field [0001] The application relates to the technical field of casting, and in particular, to a preparation method of a barrel-shaped ZL208 alloy. Background technique [0002] ZL208 is an aluminum-copper cast aluminum alloy. Aluminum-copper cast aluminum alloy has high heat treatment effect and thermal stability, but this alloy has poor casting performance, is prone to cracks, segregation, high density and low corrosion resistance. ZL208 is an Al-Cu-Ni-Co-Zr-Sb-Ti alloy. The purpose of adding a variety of elements is to form a complex compound phase, prevent the alloy from deformation at high temperature on the grain boundary, and improve heat resistance, but the mechanical properties at room temperature are Low, this alloy has stable process performance, good hardenability and poor casting performance. The molding process of investment casting is hot shell casting, and the heat dissipation rate of the mold shell is slow, and the cooling rate is lower than that ...

Claims

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Application Information

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IPC IPC(8): B22C9/04B22C9/08B22D15/04B22C7/02B22D30/00
CPCB22C9/04B22C7/02B22C9/088B22C9/086B22C9/082B22D30/00B22D15/04
Inventor 霍仁兴周凯许达吉张海彬乌南玉赛赛
Owner 赛普工业研究院(安阳)有限公司
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