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Non-magnetic balance weight and preparation method thereof, compressor

A technology of magnetic balance and balance blocks, which is applied in the direction of controlling mechanical energy, electromechanical devices, electric components, etc., can solve the problems such as difficulty in meeting high-density requirements, and achieve high-density performance and cost reduction.

Active Publication Date: 2022-07-29
GUANGDONG MEIZHI COMPRESSOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this application is to provide a non-magnetic balance weight and its preparation method, as well as a compressor containing the non-magnetic balance weight, aiming to solve the problem that the existing balance weight is difficult to achieve high density on the basis of reducing the copper content. asked questions

Method used

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  • Non-magnetic balance weight and preparation method thereof, compressor
  • Non-magnetic balance weight and preparation method thereof, compressor
  • Non-magnetic balance weight and preparation method thereof, compressor

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preparation example Construction

[0067] Correspondingly, the embodiments of the present application also provide a method for preparing a non-magnetic balance block, such as figure 1 shown, including the following steps:

[0068] S10. Each raw material powder is provided according to the formula of the non-magnetic balance mass provided in the first aspect.

[0069] In this step, the formula of the non-magnetic balance weight is as described above, and in order to save space, it will not be repeated here. It should be understood that, in order to impart good processing performance to the non-magnetic balance weight, the raw material powder contains additives. The selection of additives can be referred to above.

[0070] S20. Each raw material powder is mixed to obtain a mixed powder.

[0071] In this step, the raw material powders are mixed and mixed, so that the raw material powders are uniformly mixed, thereby helping to obtain a non-magnetic balance block with uniform and stable performance. In some em...

Embodiment 1

[0089] A preparation method of a non-magnetic balance block, comprising the following steps:

[0090] According to the total mass of the raw material powder of the balance block as 100%, weigh the following raw materials with the following mass percentages: 94.4% of iron-manganese alloy powder, 4% of copper powder, 1% of additive and 0.6% of sintering aid activator

[0091] Get the above-mentioned raw material powder and mix it in a powder mixer to obtain a mixed powder;

[0092] Pressing the mixed powder into a mechanical press to obtain a balance block embryo;

[0093] The non-magnetic balance block is prepared by sintering the balance block preform in a boat-type sintering furnace or a mesh-belt sintering furnace. Based on the total mass of the non-magnetic balance block as 100%, the element composition of the non-magnetic balance block is as follows: Mn 13~20%, Si≤1%, C≤2%, S≤0.1%, P≤0.5%, Cu 0~4%, other elements≤2%, the balance is Fe.

[0094] Among them, the pressing p...

Embodiment 2

[0096] A preparation method of a non-magnetic balance block, comprising the following steps:

[0097] According to the total mass of the balance block raw material powder being 100%, the following raw materials with the following mass percentages were weighed: 94.4% of iron-manganese alloy powder, 4% of copper powder, 1% of additive and 0.6% of sintering aid activator;

[0098] Get the above-mentioned raw material powder and mix it in a powder mixer to obtain a mixed powder;

[0099] Pressing the mixed powder into a mechanical press to obtain a balance block embryo;

[0100] The non-magnetic balance block is prepared by sintering the balance block preform in a boat-type sintering furnace or a mesh-belt sintering furnace. Based on the total mass of the non-magnetic balance block as 100%, the element composition of the non-magnetic balance block is as follows: Mn 13~20%, Si≤1%, C≤2%, S≤0.1%, P≤0.5%, Cu 0~4%, other elements≤2%, the balance is Fe.

[0101] Among them, the pressi...

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Abstract

The present application relates to the technical field of powder metallurgy, and provides a non-magnetic balance block, a preparation method thereof, and a compressor. The raw material powder of the non-magnetic balance block includes iron-manganese alloy powder, copper powder and a firing aid activator, the content of the copper powder is greater than or equal to 0, wherein, the firing aid activator is scandium, titanium, vanadium, Inorganic compounds formed by at least one of chromium, manganese, iron, cobalt, nickel, zinc, copper, and silver and non-metallic elements; based on the total mass of the non-magnetic balance weight as 100%, the non-magnetic balance weight The elemental composition is as follows: Mn 13~20%, Si≤1%, C≤2%, S≤0.1%, P≤0.5%, Cu 0~4%, other elements≤2%, and the balance is Fe. The non-magnetic balance block provided by this application, although the content of copper element is small, has a high density, and the density can reach 7.2g / cm 3 above.

Description

technical field [0001] The application belongs to the technical field of powder metallurgy, and in particular relates to a non-magnetic balance block and a preparation method thereof, and a compressor. Background technique [0002] The balance block is an important part of the compressor rotor and other rotating objects. It can balance the unbalance caused by the crankshaft with eccentric shaft during operation, improve stress distribution, reduce noise and shock absorption. It is indispensable for many mechanical equipment. auxiliary parts. Considering the practical application of mechanical equipment, the balance weight components need to meet the non-magnetic requirements. In addition, most of the existing balance blocks are made by powder metallurgy process, and the density of the product directly determines the mechanical properties such as hardness and strength of the balance block components. Therefore, the density of the balance block is also a key indicator for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/16H02K7/04B22F1/12B22F5/00C22C33/02
CPCC22C38/02C22C38/16C22C38/04C22C33/0278B22F5/00H02K7/04
Inventor 张金睿王立波张肃郑立宇
Owner GUANGDONG MEIZHI COMPRESSOR
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