Method of preparing high performance magnesium alloy tube blank by using tube blank mold
A magnesium alloy, high-performance technology, applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of limited application and promotion, poor plasticity of magnesium alloys, etc., and achieve short process flow, improved mechanical properties, and uniform internal and external structures Effect
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[0041] Example 1
[0042] A method for preparing high-performance magnesium alloy tube blanks with tube blank molds. The magnesium alloy used is AZ91. The chemical composition and mass percentage of the magnesium alloy used are Al: 8.5-9.5%, Zn: 0.45-0.91%, Mn: 0.17-0.4%, the balance is Mg.
[0043] The specific steps of the preparation method are as follows:
[0044] (1) Smelting
[0045] Weigh the raw materials according to the composition ratio of the AZ91 magnesium alloy, mix the raw materials in a resistance furnace for smelting, and obtain the AZ91 magnesium alloy melt; 2 And SF 6 Mixed gas is used as protective gas, among which, in the mixed gas, SF 6 The mass concentration is 0.1%, and the nitrogen mass concentration is SF 6 100 times of
[0046] (2) Warm up
[0047] Preheat a tube blank mold with a tube blank shape to obtain a preheated tube blank mold; wherein the preheating temperature is 450°C and the preheating time is 0.5h;
[0048] The specifications of the tube blank mold...
Example Embodiment
[0054] Example 2
[0055] A method for preparing high-performance magnesium alloy tube blanks with tube blank molds. The magnesium alloy used is AZ31, and the chemical composition and mass percentage of the magnesium alloy used are Al: 2.5-3.0%, Zn: 0.70-1.3%, Mn: 0.17-0.2%, the balance is Mg.
[0056] The specific steps of the preparation method are as follows:
[0057] (1) Smelting
[0058] Weigh the raw materials according to the composition ratio of AZ31 magnesium alloy, mix the raw materials in a resistance furnace for smelting, and obtain AZ31 magnesium alloy melt; N is used in the smelting process. 2 And SF 6 Mixed gas is used as protective gas, among which, in the mixed gas, SF 6 The mass concentration is 0.4%, and the nitrogen mass concentration is SF 6 100 times of
[0059] (2) Warm up
[0060] Preheat a tube blank mold with a tube blank shape to obtain a preheated tube blank mold; wherein the preheating temperature is 80°C and the preheating time is 3h;
[0061] The specificat...
Example Embodiment
[0067] Example 3
[0068] A method for preparing high-performance magnesium alloy tube blanks with tube blank molds. The magnesium alloy used is AM50, and the chemical composition and mass percentage of the magnesium alloy used are Al: 4.5-5.3%, Zn: 0.2%, Mn: 0.28- 0.5%, the balance is Mg.
[0069] The specific steps of the preparation method are as follows:
[0070] (1) Smelting
[0071] Weigh the raw materials according to the composition ratio of AM50 magnesium alloy, put them in a resistance furnace for smelting, and obtain AM50 magnesium alloy melt; N is used in the smelting process. 2 And SF 6 Mixed gas is used as protective gas, among which, in the mixed gas, SF 6 The mass concentration is 0.3%, and the nitrogen mass concentration is SF 6 100 times of
[0072] (2) Warm up
[0073] Preheat a tube blank mold with a tube blank shape to obtain a preheated tube blank mold; wherein the preheating temperature is 150°C, and the preheating time is 1h;
[0074] The specifications of the tub...
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