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Output shaft material for pneumatic performing mechanism and preparation method for output shaft

A pneumatic actuator and output shaft technology, applied in mechanical equipment, shafts, manufacturing tools, etc., can solve the problems of low working efficiency, poor sealing effect, and poor material of pneumatic actuators, and achieve high transmission efficiency and execution accuracy. Good mechanical properties, small thermal expansion coefficient

Inactive Publication Date: 2018-11-02
WUXI CHENGTIANNUO ACTUATOR MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the actuators used in the market mainly have problems such as material hardness, tensile strength, wear resistance, and poor corrosion resistance.
Due to the fact that in the actual use of the pneumatic actuator, the cooperation between the cylinder, piston, output shaft, load spring and other components is not tight enough, the sealing effect is poor, the execution accuracy is poor in actual operation, and the long-term operation quality is unstable. , and the temperature difference range of the applicable temperature is small
In particular, the output shaft of the core part of the device has a long cycle and runs at high temperature and fast, the wear resistance of the output shaft is poor, and the relatively matching bearings often have the phenomenon of walking the inner ring, resulting in low working efficiency of the pneumatic actuator. There are potential safety hazards, which affect its service life and cause the output shaft to be easily damaged or scrapped, seriously affecting the economic benefits of the enterprise
Therefore, it is necessary to improve the wear resistance of the output shaft of the key component of the pneumatic actuator through technological innovation, and completely solve the existing phenomenon of poor material and non-wear resistance

Method used

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  • Output shaft material for pneumatic performing mechanism and preparation method for output shaft

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Embodiment 1

[0015] A kind of output shaft material for a pneumatic actuator according to the present invention and its preparation method, its component ratio in terms of weight percentage is: Cu: 1.5%, Mg: 0.7%, Mn: 0.16%, Ni: 1.5%, Zn: 1.8%, B 2 o 3 : 0.5%, SiO 2 : 1.7%, TiC: 1.6%, Re: 0.8%, and the rest is Fe.

[0016] The output shaft material for a pneumatic actuator and its preparation method include the following manufacturing steps:

[0017] (1) Embryo making: Mix the prepared raw materials of each component evenly and put them into the melting furnace, and start to heat up for melting. After the raw materials are completely melted, adjust the internal temperature of the melting furnace to 760°C for refining treatment. Half an hour later, adjust the temperature inside the melting furnace to 750°C, then carry out refining treatment, and finally adopt slow cooling to obtain a Φ250mm cylindrical ferroalloy billet.

[0018] (2) Billet pretreatment and finishing: Clean the ferroall...

Embodiment 2

[0021] A kind of output shaft material for a pneumatic actuator according to the present invention and its preparation method, its component ratio in terms of weight percentage is: Cu: 1.6%, Mg: 0.75%, Mn: 0.17%, Ni: 1.4%, Zn: 2%, B 2 o 3 : 0.45%, SiO 2 : 1.9%, TiC: 1.5%, Re: 1%, and the rest is Fe.

[0022] The output shaft material for a pneumatic actuator and its preparation method include the following manufacturing steps:

[0023] (1) Embryo making: Mix the prepared raw materials of each component evenly and put them into the melting furnace, and start to heat up for melting. After the raw materials are completely melted, adjust the internal temperature of the melting furnace to 765°C for refining treatment. Half an hour later, adjust the internal temperature of the melting furnace to 760°C, carry out refining treatment, and finally adopt slow cooling to obtain a cylindrical ferroalloy billet of Φ450mm.

[0024] (2) Billet pretreatment and finishing: Clean the ferroal...

Embodiment 3

[0027] A kind of output shaft material for a pneumatic actuator according to the present invention and its preparation method, its component ratio in terms of weight percentage is: Cu: 1.8%, Mg: 0.9%, Mn: 0.18%, Ni: 1.6%, Zn: 2.1%, B 2 o 3 : 0.5%, SiO 2 : 1.8%, TiC: 2%, Re: 1.2%, and the rest is Fe.

[0028] The output shaft material for a pneumatic actuator and its preparation method include the following manufacturing steps:

[0029] (1) Embryo making: Mix the prepared raw materials of each component evenly and put them into the melting furnace, and start to heat up for melting. After the raw materials are completely melted, adjust the internal temperature of the melting furnace to 760°C for refining treatment. Half an hour later, adjust the temperature inside the melting furnace to 770°C, then carry out refining treatment, and finally adopt slow cooling to obtain a cylindrical ferroalloy billet with a diameter of 550 mm.

[0030] (2) Billet pretreatment and finishing: C...

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Abstract

The invention relates to an output shaft material for a pneumatic performing mechanism and a preparation method for an output shaft. The output shaft material consists of the following components in percentage by weight: 1.2%-2.5% of Cu, 0.65%-1.0% of Mg, 0.15%-0.2% of Mn, 1.2%-2% of Ni, 1.6-2.4% of Zn, 0.42%-0.58% of B2O3, 1.5%-2.5% of SiO2, 1.2%-2.8% of TiC, 0.5%-1.5% of Re and the balance of Fe. The preparation method for the output shaft comprises the following steps of: preparing blank, pre-treating the blank, performing finish machining and performing quenching treatment. The output shaft has the characteristics of being relatively high in wear resistance, high in material hardness, small in thermal expansion coefficient, low in friction coefficient and the like. Meanwhile, the formula and the preparation process of the process material are improved, so that the output shaft material has good mechanical performance.

Description

technical field [0001] The invention relates to a material for an output shaft of a pneumatic actuator and a preparation method thereof, in particular to a material for an output shaft of a pneumatic actuator used in industries such as thermoelectricity and petrochemical industry and a preparation method thereof. Background technique [0002] The pneumatic actuator is a semi-automatic actuator that drives the opening and closing or adjusting the valve through air pressure. The structure of the device is mainly composed of cylinder body, bearing, solenoid valve, stroke adjustment system, output shaft, spring and other main components. The actuator is widely used in petrochemical, machinery, power plants and other industries with high safety requirements, so the quality of its materials is high. At present, the actuators used in the market mainly have problems such as material hardness, tensile strength, wear resistance, and poor corrosion resistance. Due to the fact that in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16C22C38/04C22C38/08C21D9/28B23P15/00F16C3/02
Inventor 徐晶张莹
Owner WUXI CHENGTIANNUO ACTUATOR MFG CO LTD
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