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A kind of method of al-ti-b-re alloy modified zinc alloy

A zinc alloy and alloy technology, applied in the field of die-casting zinc alloy, can solve the problems of easy cracking and deformation, easy intergranular corrosion, poor physical and chemical properties, etc., and achieve the effects of improving tensile strength, improving microstructure and improving yield strength.

Active Publication Date: 2017-05-03
CHANGZHOU UNIV
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Problems solved by technology

[0003] 1. The gold grains of the domestic No. 3 zinc alloy are thicker, the intergranular corrosion is easy, its physical and chemical properties are poor, and it is easy to crack and deform during the casting process;
[0004] 2. The mechanical properties of domestic No. 3 zinc alloy are worse than those of foreign countries

Method used

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  • A kind of method of al-ti-b-re alloy modified zinc alloy
  • A kind of method of al-ti-b-re alloy modified zinc alloy

Examples

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Embodiment example 1

[0026] Experimental preparation of 200kg modified die-casting zinc alloy, the steps are as follows:

[0027] 1. Melting intermediate metamorphic alloy

[0028] Melting Huoju No. 3-Al-Ti-B-RE master alloy, its composition weight percentage is as follows:

[0029] Torch No. 3 4.8Kg;

[0030] Al-Ti-B-RE alloy 1.2Kg.

[0031] (1) Prepare Huoju No. 3 and Al-Ti-B-RE mixture first, raise the temperature to 620°C, and stir evenly after 60 minutes.

[0032] (2) After heat preservation for 15-25 minutes, cast out of the furnace at a temperature of 600°C.

[0033] 2. Ingredients

[0034] Analyze the composition of the prepared metamorphic alloy, and calculate the mass ratio of each element and the absorption rate of rare earth. , and then prepare the required Torch No. 3, the master alloy, to ensure that it is accurate, and its composition weight percentage is as follows:

[0035] Torch No. 3 194Kg;

[0036] Huoju No. 3-Al-Ti-B-RE alloy 6Kg.

[0037] 3. Melting

[0038] Filling ...

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Abstract

The invention relates to die-cast zinc alloy and particularly relates to a method for modifying zinc alloy by using Al-Ti-B-RE alloy. According to the method, the Al-Ti-B-RE alloy is added to carry out modification treatment based on the existing 3# zinc alloy, so as to improve the microstructure of the zinc alloy, and then, mechanical properties, such as yield strength, tensile strength, elongation percentage, impact toughness and the like, of the die-cast alloy are improved; after modification is carried out through adding Al-Ti-B-RE intermediate alloy, the tensile strength of the 3# zinc alloy is improved remarkably, and the elongation percentage is increased; die-cast zinc alloy products meeting performance requirements can be produced for users, and the method is applicable to large-batch production of modified zinc alloy.

Description

technical field [0001] The invention relates to die-casting zinc alloy, in particular to a method for modifying Al-Ti-B-RE alloy zinc alloy. Background technique [0002] Compared with other non-ferrous alloys, zinc alloys have excellent casting properties and good mechanical properties. There are more than 500 kinds of die-casting zinc alloy products, which are widely used in automobiles, tractors, daily construction hardware, electromechanical equipment, instruments, cultural and sports toys, etc. Among them, No. 3 zinc alloy (GZ3) has always been the preferred material for the die-casting industry. It can best balance the requirements of physical and mechanical properties. Its excellent castability and long-lasting dimensional stability make more than 70% of zinc alloy die-casting products use No. 3 Zinc alloy, No. 3 zinc alloy is also especially suitable for surface treatment such as electroplating, oil spraying and chromizing. The research and development of No. 3 zin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C22C1/03
Inventor 吴长军杨廷志苏旭平刘亚彭浩平
Owner CHANGZHOU UNIV
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