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Spring, preparation method thereof and mold assembly used for preparing spring

A mold and component technology, applied in the field of spring processing, can solve the problems of operator's misjudgment, difficult integral molding, uncontrollable shape, etc.

Inactive Publication Date: 2018-01-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical deformation mechanisms such as dislocation slip and twinning usually exist in this crystal alloy material, which leads to a small elastic limit of the material (less than 1%). After long-term repeated use, the stiffness is easy to decay, and this decay It is not easy to detect, and it is easy to provide wrong information to the operator, leading to the wrong judgment of the operator, which may cause hidden dangers
[0004] Researchers have also tried to find amorphous alloy materials with typical deformation mechanisms such as dislocation slip and twinning to prepare springs. However, this amorphous alloy material has a large elastic limit (greater than 1%), and usually cannot be wound The researchers have also proposed the use of flinging sheet technology (integrating several amorphous metal plate-like bodies through synthetic resin adhesive lamination) forming, but the diameter of the spring prepared by this method is small and the shape Uncontrollable, difficult to form
This limits the production of springs made from

Method used

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  • Spring, preparation method thereof and mold assembly used for preparing spring
  • Spring, preparation method thereof and mold assembly used for preparing spring
  • Spring, preparation method thereof and mold assembly used for preparing spring

Examples

Experimental program
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Effect test

preparation example Construction

[0044] In addition, the present invention also provides a method for preparing a spring, which includes the following steps: S1, providing a molten metal capable of forming a bulk amorphous alloy with a critical dimension greater than 1mm (preferably greater than 10mm); (amorphous The measurement method of the critical size of the alloy is as described above, and will not be repeated here), and the master alloy ingot is melted to form a molten metal; S2, under the pouring condition, the molten metal is injected into the present invention through the sprue In the mold assembly, the spring is formed; S3. Open the mold assembly, take out the spring precursor with the mandrel built in, and cut off the excess part of the surface of the spring precursor after cooling, to obtain the spring precursor with the built-in mandrel. The spring of the mandrel; S4. Under corrosive conditions, the spring with the mandrel built in is placed in an corrosive solution to corrode the mandrel to obta...

preparation example 1 to 4

[0060] One, preparation example 1 to 4, be used for illustrating the mold assembly that the present invention prepares spring

[0061] The test items and test methods involved in the following preparation examples 1 to 4 are as follows:

[0062] (1) Vickers hardness: measured with reference to the standard of ASTM E90-82. Specifically, a test block with a length, width, and height of 20×20×2mm is formed by casting a copper mold at room temperature and pressure, using HVS-10Z digital Vickers hardness tester (Shanghai Precision), diamond diamond indenter, and a pressure of 15 under 3KG. Seconds, the hardness value is calculated by measuring the diagonal length of the diamond indentation.

[0063] (2) Immersion corrosion test (corrosion rate): measured according to the standard of JB / T 7901-1999 "Metal Material Laboratory Uniform Corrosion Full Immersion Test Method", specifically, the length, width and height are formed by copper mold casting under normal temperature and normal...

Embodiment 1

[0086] Embodiment 1 (Zr 55 Al 10 Cu 30 Ni 5 Amorphous alloy spring)

[0087] Zr 55 Al 10 Cu 30 Ni 5 Performance testing of amorphous alloy materials:

[0088] It can be seen from the test that the Zr 55 Al 10 Cu 30 Ni 5 The critical size of the amorphous alloy is greater than 10mm, which belongs to the bulk amorphous alloy; and the Zr 55 Al 10 Cu 30 Ni 5 Other performance test results of amorphous alloy materials are shown in the following table:

[0089]

[0090] The preparation method of the spring is as follows:

[0091] (1) The general formula is Zr 55 Al 10 Cu 30 Ni 5 Put the master alloy ingot into the feeding device of the horizontal 160T die-casting machine, and put it into the melting device of the die-casting machine from the feeding device; the vacuum degree of the die-casting machine is 200Pa. Melting the master alloy ingot by induction heating to form a molten soup, the temperature of the molten soup is 980°C;

[0092] (2) The metal molten...

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Abstract

The invention discloses a spring, a preparation method thereof and a mold assembly used for preparing the spring. The spring is an integrally formed amorphous alloy element. Compared with conventionalcrystal materials, by utilizing structural characteristics of short range order and long range disorder of an amorphous alloy, the spring has the excellent mechanical properties of relatively high elastic limit, high strength, high hardness and the like, and therefore the phenomenon of flabby stiffness is not prone to occurring after the spring is used many times. Meanwhile, by utilizing the characteristics of no typical deformation mechanism such as dislocation slipping and twin crystal of the integrally formed amorphous alloy, the spring is broken rapidly once exceeding use limit so that anoperator can easily find out and timely handle with the situation that the spring fails.

Description

technical field [0001] The invention relates to the field of spring processing, in particular to a spring and a preparation method thereof; the invention further relates to a mold assembly for preparing the spring. Background technique [0002] Although the spring industry is a small industry in the entire manufacturing industry, its role cannot be underestimated. The country's industrial manufacturing and automobile industries need to speed up the development, and the spring industry as one of the basic parts and components needs to have an advanced stage of development in order to adapt to the rapid development of the country's entire industry. In addition, the expansion of the scale and variety of spring products and the improvement of the quality level are also the needs of the replacement of mechanical equipment and the improvement of the performance of supporting hosts. Therefore, spring products play an important role in the development of the entire national industry...

Claims

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Application Information

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IPC IPC(8): C22C45/10C22C45/04C22C45/00B22C9/10B22C9/08B22C9/22
Inventor 李运春赵万平云丽吴波
Owner BYD CO LTD
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