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Special cylinder for large hydraulic machines and molding machines, and production method thereof

A hydraulic press and forming machine technology, applied in the field of machinery, can solve the problems of material hardness, wear resistance, poor corrosion resistance, affecting the service life of hydraulic cylinders, and restricting the production efficiency of enterprises, so as to achieve excellent hardness performance, reliable quality, and small thermal expansion coefficient Effect

Inactive Publication Date: 2018-12-04
宜兴市佳信数控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional hydraulic cylinder can no longer meet the requirements, mainly in the strength of the material, and there are still many deficiencies in the process of the hydraulic cylinder.
At the same time, because the hydraulic cylinder is matched with a large hydraulic machine, the quality requirements for the cylinder are very high. At present, the hydraulic cylinders used in the market still have problems such as material hardness, wear resistance, and poor corrosion resistance. When the container head is extruded at one time, the oil cylinder made of ordinary materials may leak oil, the pressure cannot be increased, and the oil cylinder may leak or crack in severe cases
As a result, the cylinder block is easily damaged, and even brings potential safety hazards, which seriously restricts the production efficiency of the enterprise and also affects the service life of the hydraulic cylinder

Method used

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  • Special cylinder for large hydraulic machines and molding machines, and production method thereof

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Effect test

Embodiment 1

[0017] A special oil cylinder for a large-scale hydraulic press and a molding machine and a preparation method thereof according to the present invention, the distribution ratio of each component in terms of weight percentage is as follows: Cu: 1.8%, Mg: 0.9%, Mn: 0.32%, Ni: 1.5%, Zn: 1.7%, B 2 o 3 : 0.65%, SiO 2 : 1.9%, TiC: 1.8%, C: 0.025%, and the rest are Fe.

[0018] A method for preparing a special oil cylinder for large hydraulic presses and forming machines, comprising the following steps:

[0019] (1) Embryo making: Mix the prepared raw materials of each component evenly and put them into the melting furnace, heat up to melt first, and after the raw materials are completely melted, adjust the internal temperature of the melting furnace to 750°C for refining treatment, and then Adjust the internal temperature of the melting furnace to 700°C, perform refining treatment first, and at the same time apply lubricating oil around the inner wall of the pre-prepared steel m...

Embodiment 2

[0025] A special oil cylinder for a large-scale hydraulic press and a forming machine and a preparation method thereof according to the present invention, the distribution ratio of each component in terms of weight percentage is: Cu: 1.6%, Mg: 0.8%, Mn: 0.35%, Ni: 1.6%, Zn: 1.6%, B 2 o 3 : 0.7%, SiO 2 : 2.0%, TiC: 1.7%, C: 0.02%, and the rest are Fe.

[0026] A method for preparing a special oil cylinder for large hydraulic presses and forming machines, comprising the following steps:

[0027] (1) Embryo making: Mix the prepared raw materials of each component evenly and put them into the melting furnace, heat up to melt first, and after the raw materials are completely melted, adjust the internal temperature of the melting furnace to 760°C for refining treatment, and then Adjust the internal temperature of the melting furnace to 710°C, perform refining treatment first, and at the same time apply lubricating oil around the inner wall of the pre-prepared steel mold, then pou...

Embodiment 3

[0033] A special oil cylinder for a large-scale hydraulic press and a forming machine and a preparation method thereof according to the present invention, the distribution ratio of each component in terms of weight percentage is: Cu: 2.2%, Mg: 1.0%, Mn: 0.4%, Ni: 1.8%, Zn: 1.8%, B 2 o 3 : 0.75%, SiO 2 : 2.2%, TiC: 2.0%, C: 0.03%, and the rest are Fe.

[0034] A method for preparing a special oil cylinder for large hydraulic presses and forming machines, comprising the following steps:

[0035](1) Embryo making: Mix the prepared raw materials of each component evenly and put them into the melting furnace, heat up to melt first, and after the raw materials are completely melted, adjust the internal temperature of the melting furnace to 780°C for refining treatment, and then Adjust the internal temperature of the melting furnace to 720°C, perform refining treatment first, and at the same time apply lubricating oil around the inner wall of the pre-prepared steel mold, then pour...

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Abstract

The invention relates to a special cylinder for large hydraulic machines and molding machines, and a production method thereof. The oil cylinder comprises 1.8 wt% of Cu, 0.9 wt% of Mg, 0.32 wt% of Mn,1.5 wt% of Ni, 1.7 wt% of Zn, 0.65 wt% of B2O3, 1.9 wt% of SiO2, 1.8 wt% of TiC, 0.025 wt% of C, and the balance of Fe. The production method of the special cylinder for large hydraulic machines andmolding machines comprises the following steps: blank production, blank pretreatment, molding, quenching treatment and polishing treatment. The special cylinder for large hydraulic machines and molding machines has the advantages of e excellent hardness performance, good corrosion resistance, small thermal expansion coefficient, low friction coefficient and high wear resistance, and also has the characteristics of reliable quality, strong pressure resistance and long service life.

Description

technical field [0001] The invention relates to the machinery industry, in particular to a large-scale hydraulic press, a special oil cylinder for a forming machine and a preparation method thereof, which are specially provided for a large-scale hydraulic press and a large-scale spinning forming machine. Background technique [0002] Large-scale hydraulic cylinders are mainly used in the machinery industry, for some large-scale hydraulic forming, such as one-time hydraulic head docking of large-diameter heads, hoisting of large machinery, including subway hydraulic shield machines, extrusion of special mechanical products molding etc. At present, the traditional hydraulic cylinders can no longer meet the requirements, mainly in terms of material strength, and there are still many deficiencies in the process of hydraulic cylinders. At the same time, because the hydraulic cylinder is matched with a large hydraulic machine, the quality requirements for the cylinder are very hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/08C22C38/16C22C32/00C22C33/04C21D1/18C21D8/00
CPCC21D1/18C21D8/005C22C32/0005C22C32/0052C22C33/04C22C38/002C22C38/04C22C38/08C22C38/16
Inventor 裴跃新裴杨
Owner 宜兴市佳信数控科技有限公司
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