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Oil-free machine rotor base and preparing method

A rotor seat, oil-free machine technology, applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of increased enterprise cost, long casting time, low mechanical properties, etc., to improve tensile strength, graphite ball The effect of increasing the number and improving the spherical state

Inactive Publication Date: 2018-09-07
宁波力古机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rotor seat is an essential part of the oil-free machine. The rotor seat prepared by the traditional process generally has the disadvantages of low mechanical properties, such as tensile strength and hardness, which cannot meet the needs of modern industry, resulting in a short service life of the rotor, easy wear, and increased The cost of the enterprise, and the castings in the traditional process have to go through various processes such as heat treatment, the cost is high, the casting time is long, and the efficiency is low. In addition, the yield of the rotor seat prepared by the traditional process is low, and the performance of most castings cannot be guaranteed, which needs to be urgently improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A rotor seat of an oil-free machine, its composition and mass % include:

[0045] 2.7% C; 1.3% Si; 0.04% Al; 0.025% B; 0.05% Sn; 0.015% P; 0.01% Ga; 0.3% Mn; 0.06% W; 0.9% Cu; 0.05% Mo; the balance is Fe and unavoidable impurities.

[0046] A method for manufacturing a rotor seat of an oil-free machine, comprising the following steps:

[0047] (1) Melting

[0048] Alloy smelting molten iron is carried out in an intermediate frequency induction furnace. According to the predetermined weight of molten iron, pig iron, aluminum, carbon, copper, ferromanganese, boron, ferrosilicon, and ferrophosphorus are added in sequence according to the proportion of components. The alloy liquid obtained after smelting controls The temperature is 1550-1600°C, keep warm for 40-50min;

[0049] (2) Ball bag breeding

[0050] Add multi-element alloy blocks, including molybdenum, gallium, tin and tungsten, into the spheroidizing bag in advance, add 0.5% silicon barium calcium and 0.2% ferr...

Embodiment 2

[0055] A rotor seat of an oil-free machine, its composition and mass % include:

[0056]2.9% C; 1.8% Si; 0.06% Al; 0.03% B; 0.07% Sn; 0.025% P; 0.015% Ga; 0.5% Mn; 0.08% W; 1.6% Cu; 0.08% Mo; the balance is Fe and unavoidable impurities.

[0057] A method for manufacturing a rotor seat of an oil-free machine, comprising the following steps:

[0058] (1) Melting

[0059] Alloy smelting molten iron is carried out in an intermediate frequency induction furnace. According to the predetermined weight of molten iron, pig iron, aluminum, carbon, copper, ferromanganese, boron, ferrosilicon, and ferrophosphorus are added in sequence according to the proportion of components. The alloy liquid obtained after smelting controls The temperature is 1550-1600°C, keep warm for 40-50min;

[0060] (2) Ball bag breeding

[0061] Add multi-element alloy blocks, including molybdenum, gallium, tin and tungsten, into the spheroidizing bag in advance, add 0.5% silicon barium calcium and 0.2% ferro...

Embodiment 3

[0065] A rotor seat of an oil-free machine, its composition and mass % include:

[0066] 2.8% C; 1.6% Si; 0.05% Al; 0.028% B; 0.06% Sn; 0.02% P; 0.012% Ga; 0.4% Mn; 0.07% W; 1.2% Cu; 0.07% Mo; the balance is Fe and unavoidable impurities.

[0067] A method for manufacturing a rotor seat of an oil-free machine, comprising the following steps:

[0068] (1) Melting

[0069] Alloy smelting molten iron is carried out in an intermediate frequency induction furnace. According to the predetermined weight of molten iron, pig iron, aluminum, carbon, copper, ferromanganese, boron, ferrosilicon, and ferrophosphorus are added in sequence according to the proportion of components. The alloy liquid obtained after smelting controls The temperature is 1550-1600°C, keep warm for 40-50min;

[0070] (2) Ball bag breeding

[0071] Add multi-element alloy blocks, including molybdenum, gallium, tin and tungsten, into the spheroidizing bag in advance, add 0.5% silicon barium calcium and 0.2% ferr...

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Abstract

The invention provides an oil-free machine rotor base and a preparing method. The alloy formula of the rotor base is adjusted again, multi-component alloy elements are added, and the performance is improved; and in the manufacturing process, a secondary instant multi-component alloy compound inoculation technology is adopted, the matrix structure is refined, a film laminating thin shell type stepped pouring non-riser technology is adopted, balanced solidification of castings is achieved, performance of all parts is coincident, the finished product rate and the mechanical property of the rotorbase are improved, and meanwhile, the technological process is shortened.

Description

technical field [0001] The invention relates to a rotor seat of an oil-free machine and a preparation method thereof. Background technique [0002] The rotor seat is an essential part of the oil-free machine. The rotor seat prepared by the traditional process generally has the disadvantages of low mechanical properties, such as tensile strength and hardness, which cannot meet the needs of modern industry, resulting in a short service life of the rotor and easy wear, which increases the The cost of the enterprise, and the castings in the traditional process have to go through various processes such as heat treatment, the cost is high, the casting time is long, and the efficiency is low. In addition, the yield of the rotor seat prepared by the traditional process is low, and the performance of most castings cannot be guaranteed, which needs to be urgently improved. Contents of the invention [0003] In view of this, the object of the present invention is to provide an oil-fr...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C37/04C22C33/08C21C1/10B22C9/22
CPCB22C9/22C21C1/105C22C33/08C22C37/04C22C37/10
Inventor 陈海波孙昌建刘昌敬陈瑞红应吉义
Owner 宁波力古机械制造有限公司