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Diameter-enlarging cone and manufacturing process thereof

A manufacturing process and cone technology, applied in the field of diameter expansion equipment, can solve the problems of poor lubrication effect, short service life, poor wear resistance, etc.

Active Publication Date: 2013-12-25
SUNYO S&T CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The expanding cone in the prior art adopts the traditional preparation method, which has poor wear resistance, poor lubricating effect and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1, the material component composition of expanding diameter cone is as follows:

[0063] C: 2.3%,

[0064] Si: 1.8%,

[0065] Mn: 1.3%,

[0066] Cr: 0.6%,

[0067] Ni: 1%,

[0068] Mo: 0.4%,

[0069] V: 0%,

[0070] Cu: 0.2%,

[0071] S: 0%,

[0072] P: 0%,

[0073] The rest is Fe element.

[0074] The manufacture technology of expanding diameter cone, comprises the steps:

[0075] The first step: prepare materials, prepare materials according to the above material composition;

[0076] The second step: formulate the pouring process according to the size of the expanding cone (that is, choose the appropriate mold);

[0077] Step 3: Prepare casting tooling, including centrifugal casting mold and mandrel;

[0078] The fourth step: pouring, using molten steel pouring temperature of 1430 ° C;

[0079] Step 5: After pouring and forming, annealing and normalizing heat treatment are carried out;

[0080] Step 6: Rough machining of the shape and inner h...

Embodiment 2

[0088] Embodiment 2, the material component composition of diameter-expanding cone is as follows:

[0089] C: 2.4%,

[0090] Si: 1.9%,

[0091] Mn: 1.5%,

[0092] Cr: 0.8%,

[0093] Ni: 1.2%,

[0094] Mo: 0.35%,

[0095] V: 0%,

[0096] Cu: 0.3%,

[0097] S: 0%,

[0098] P: 0%,

[0099] The rest is Fe element.

[0100] The manufacture technology of expanding diameter cone, comprises the steps:

[0101] The first step: prepare materials, prepare materials according to the above material composition;

[0102] The second step: formulate the pouring process according to the size of the expanding cone;

[0103] Step 3: Prepare casting tooling, including centrifugal casting mold and mandrel;

[0104] The fourth step: pouring, using molten steel pouring temperature of 1480 ° C;

[0105] Step 5: After pouring and forming, annealing and normalizing heat treatment are carried out;

[0106] Step 6: Rough machining of the shape and inner hole of the expanding cone;

[0107]...

Embodiment 3

[0113] Embodiment 3, the material component composition of diameter-expanding cone is as follows:

[0114] C: 2.2%,

[0115] Si: 1.8%,

[0116] Mn: 1%,

[0117] Cr: 0.5%,

[0118] Ni: 0.8%,

[0119] Mo: 0.5%,

[0120] V: 0.1%,

[0121] Cu: 0.25%,

[0122] S: 0.01%,

[0123] P: 0.01%,

[0124] The rest is Fe element.

[0125] The manufacture technology of expanding diameter cone, comprises the steps:

[0126] The first step: prepare materials, prepare materials according to the above material composition;

[0127] The second step: formulate the pouring process according to the size of the expanding cone;

[0128] Step 3: Prepare casting tooling, including centrifugal casting mold and mandrel;

[0129] The fourth step: pouring, using molten steel pouring temperature of 1450 ℃;

[0130] Step 5: After pouring and forming, annealing and normalizing heat treatment are carried out;

[0131] Step 6: Rough machining of the shape and inner hole of the expanding cone;

[0...

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Abstract

The invention relates to a diameter-enlarging cone and a manufacturing process thereof. The diameter-enlarging cone comprises the following material components in percentage by weight: 2.2%-2.4% of C, 1.8%-2.0% of Si, 1%-1.5% of Mn, 0.5%-0.8% of Cr, 0.8%-1.2% of Ni, 0.35%-0.5% of Mo, not more than 0.15% of V, 0.2%-0.3% of Cu, not more than 0.025% of S, not more than 0.025% of P and the balance of Fe element. The manufacturing process comprises the following steps: firstly preparing materials; then formulating a pouring process flow; preparing a pouring tool; pouring by adopting molten steel pouring temperature of 1430 DEG C-1480 DEG C; performing annealing and normalizing thermal treatment after forming by pouring; performing rough machining on the shape and inner hole of the diameter-enlarging cone; placing in a dry and ventilated environment for 30-150 days for natural aging; performing finish machining on the shape and inner hole of the diameter-enlarging cone; enabling the integral thermal treatment hardness HRC of the diameter-enlarging cone to achieve 45-50; grinding a T-shaped slot and inner hole of the diameter-enlarging cone; processing a lubricating oil hole in the diameter-enlarging cone by adopting deep hole drilling; processing a central chamfer angle and then preparing a finished product. The diameter-enlarging cone has the advantages of friction resistance, wear resistance, good self-lubrication function and long service life.

Description

technical field [0001] The invention relates to the technical field of diameter expanding equipment, in particular to a diameter expanding cone and a manufacturing process thereof. Background technique [0002] At present, in the expanding equipment, the expanding head is a key component in the expanding equipment. The expansion tool is equipped with an expansion head, which occupies limited space, and has a complex shape and built-in structure. The fixation of the expansion tool ensures that the force on the expansion head is uniform, and the force on the expansion head is: convert the axial movement of the tie rod into direct contact with the steel pipe The radial movement of the pipe wall module eliminates the forming pressure generated during the forming process of the steel pipe and the welding stress generated during welding, and ensures that the diameter of the entire length of the steel pipe is basically the same. [0003] The expanding head in the prior art is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/56B23P15/00
CPCC22C38/56B21D37/01B21D39/20
Inventor 张建军徐伟陈文宝赵东盛金
Owner SUNYO S&T CO LTD
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