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Expanding cone and its manufacturing process

A production 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 and so on

Active Publication Date: 2015-10-21
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

An expanding cone and a manufacturing process therefor. The material components of the expanding cone consist of the following: C: 2.2% to 2.4%, Si: 1.8% to 2.0%, Mn: 1% to 1.5%, Cr: 0.5% to 0.8%, Ni: 0.8% to 1.2%, Mo: 0.35% to 0.5%, V: ≤ 0.15%, Cu: 0.2% to 0.3%, S: ≤ 0.025%, P: ≤ 0.25%, and the remainder being element Fe. The manufacturing process for the expanding cone is: first, preparation of materials; then, development of a casting process; preparation of casting tooling; casting, where the temperature for molten steel casting is between 1430°C and 1480°C; annealing and normalizing heat treatment after casting and molding; rough machining of the shape and inner bore of the expanding cone; placement in a dry and ventilated environment for 30 days to 150 days for natural aging; finishing of the shape and inner bore of the expanding cone; the overall heat treatment hardness of the expanding cone is at an HRC = 45 to 50; honing treatment of a T-shaped groove and the inner bore of the expanding core; employment of a deep hole drill for processing a lubricating oil hole on the expanding cone; and, chamfering at a processing center to produce a finished product.

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 Patents(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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