CN2702797Y - Skull-melting centrifugal casting double-metal special steel pipe - Google Patents

Skull-melting centrifugal casting double-metal special steel pipe Download PDF

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Publication number
CN2702797Y
CN2702797Y CN 200420018172 CN200420018172U CN2702797Y CN 2702797 Y CN2702797 Y CN 2702797Y CN 200420018172 CN200420018172 CN 200420018172 CN 200420018172 U CN200420018172 U CN 200420018172U CN 2702797 Y CN2702797 Y CN 2702797Y
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CN
China
Prior art keywords
metal
layer
double
steel pipe
centrifugal casting
Prior art date
Application number
CN 200420018172
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Chinese (zh)
Inventor
周国良
Original Assignee
周国良
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Application filed by 周国良 filed Critical 周国良
Priority to CN 200420018172 priority Critical patent/CN2702797Y/en
Application granted granted Critical
Publication of CN2702797Y publication Critical patent/CN2702797Y/en

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Abstract

The utility model provides a double-metal special steel pipe for skull-melting centrifugal casting applied to mechanical manufactures like metallurgy rollers, feed cylinders, etc. The double-metal special steel pipe is provided with an inner layer and an outer layer which have different metal components; the double-metal special steel pipe adopts special skull-melting centrifugal casting, which forms a mixed layer between the outer metal layer and the inner metal layer, wherein, alloying components of the outer metal layer and the inner metal layer are different to each other; the mixed layer is 3-15 mm thick and is provided with a third component. The mixed layer alters the face bonding of the double-metal to layer bonding, which not only can enhance the combination of the inner and the outer metal layers and prevent cracking, but also can serve as a transition layer for mechanical properties, such as hard, intensity, etc. in mechanical manufactures. The double-metal special steel pipe can improve the mechanical property of the double-metal steel pipes, enhance the service life, simplify the mechanical processing, accelerate the wide application of the double-metal steel pipes and reduce the material loss of cylinder part manufactures.

Description

Slag-dissolving centrifugal casting duplex metal special steel tube

Technical field

The utility model relates to a kind of metallurgical rolling mill and rolls and roll, have the socket spare of specific (special) requirements to make required special material, specifically slag-dissolving centrifugal casting duplex metal special steel tube in the machine-building such as injection molding machine of plastic barrel.

Technical background

In machine-building, require very high for a side pipe wall rub proofness, simultaneously require the good socket spare of toughness again, traditional handicraft generally adopts structural alloy steel, after processing through modified, boring etc., carry out processing such as carburizing or nitrogenize in the side that needs are wear-resisting, but rigidity layer is very thin, generally has only 0.3-0.5mm, therefore, anti-wear performance is poor, and service life is short.If use bimetallic material then can improve the wearing layer alloy content, increase rigidity layer, but the spendable bimetallic tubing of China mainly is homemade bimetallic steel pipe unstable properties, easy to crack also seldom at present.A kind of " bimetallic centrifugal casting process for cylindrical casting " of a kind of " method of centrifugal casting bi-metal double-pipe " of prior art Chinese patent CN8510236A bulletin and CN1057949C bulletin mainly is from centrifugal casting process aspect; whether preheating and whether use metallurgical technology such as molten slag protection to consider; with two kinds of metal tubes simple " cover " together; do not consider the mechanical performance difference of two kinds of metals; in machine-building afterwards and the use; two kinds of metals are easy to generate cracking, phenomenons such as disengaging.

Summary of the invention

At above problem, the utility model provides a kind of ectonexine metal to organically combine, the mutual slag-dissolving centrifugal casting duplex metal special steel tube of coordinating, its technical scheme is, adopt special molten slag and centrifugal casting technique, producing a thickness between widely different outer layer metal of alloy composition and inner layer metal is the mixed layer that 3-15mm has the third composition, this mixed layer changes bimetallic face and is combined into a layer combination, and can strengthen the bonding of ectonexine metal, preventing cracking, is again the buffer transition layer of mechanical performance such as hardness, intensity in the machine-building.

The beneficial effects of the utility model are in conjunction with being improved to a layer combination with the simple face between bimetallic, improve the mechanical performance of bimetallic steel pipe effectively, improved service life, simplified machined, promote the use of bimetallic steel pipe, reduce the spillage of material that bobbin spare is made.

Description of drawings

Fig. 1 is the utility model sectional view.

Among the figure, 1 is outer layer metal, and 2 is mixed layer, and 3 is inner layer metal.

The specific embodiment

The utility model is according to the requirement difference of behaviour in service, and the used metal material difference of ectonexine is different, and skin can be high-chromium alloy, nichrome etc., and internal layer can be low-alloy steel, mild steel or spheroidal graphite cast-iron, also can be opposite.Specify below in conjunction with two embodiment:

Embodiment one, and when the utility model was used as metallurgical roller, because the pipe outer wall need be wear-resistant, therefore, steel pipe skin 1 was used Cr12M 0V, internal layer 3 is used 25CrTi; This moment, outer 1 hardness can reach more than the HRC60 degree, and the hardness of mixed layer 2 is about the HRC40 degree.

Embodiment two, and when the utility model steel pipe was used as mineral aggregate or mixed earth carrier pipe, inwall needed wear-resistant, and then internal layer 3 is used Cr12M 0V, outer 1 uses 25CrTi.

Claims (1)

1, slag-dissolving centrifugal casting duplex metal special steel tube, internal layer and skin with two kinds of different metal compositions, it is characterized in that adopting special slag-dissolving centrifugal casting, between widely different outer layer metal of alloy composition and inner layer metal, produce a mixed layer with the third composition, this mixed layer changes bimetallic face and is combined into a layer combination, and can strengthen the ectonexine metal combination, prevent the cracking, be again the transition zone of mechanical performance such as hardness, intensity in the machine-building, the thickness of described mixed layer is 3-15mm.
CN 200420018172 2004-05-24 2004-05-24 Skull-melting centrifugal casting double-metal special steel pipe CN2702797Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420018172 CN2702797Y (en) 2004-05-24 2004-05-24 Skull-melting centrifugal casting double-metal special steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420018172 CN2702797Y (en) 2004-05-24 2004-05-24 Skull-melting centrifugal casting double-metal special steel pipe

Publications (1)

Publication Number Publication Date
CN2702797Y true CN2702797Y (en) 2005-06-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420018172 CN2702797Y (en) 2004-05-24 2004-05-24 Skull-melting centrifugal casting double-metal special steel pipe

Country Status (1)

Country Link
CN (1) CN2702797Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102476178A (en) * 2010-11-23 2012-05-30 黄建民 Cylinder liner pouring method and cylinder liner
CN105598410A (en) * 2016-02-05 2016-05-25 武汉理工大学 Three-layer bi-metal centrifugal casting wear-resisting pipe and preparation method thereof
CN106076480A (en) * 2016-07-07 2016-11-09 江苏双发机械有限公司 A kind of roll squeezer alloy roller shell and processing method thereof
CN109047700A (en) * 2018-07-19 2018-12-21 柳州市创科复合金属陶瓷制品有限公司 A kind of compound body of roll production method of bimetallic
CN109127734A (en) * 2018-09-06 2019-01-04 湖南三泰新材料股份有限公司 Roll sleeve, the manufacturing method of roll sleeve and roll

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102476178A (en) * 2010-11-23 2012-05-30 黄建民 Cylinder liner pouring method and cylinder liner
CN105598410A (en) * 2016-02-05 2016-05-25 武汉理工大学 Three-layer bi-metal centrifugal casting wear-resisting pipe and preparation method thereof
CN105598410B (en) * 2016-02-05 2019-01-29 武汉理工大学 A kind of preparation method of three layers of bimetal centrifugal casting wear-resistant pipe
CN106076480A (en) * 2016-07-07 2016-11-09 江苏双发机械有限公司 A kind of roll squeezer alloy roller shell and processing method thereof
CN109047700A (en) * 2018-07-19 2018-12-21 柳州市创科复合金属陶瓷制品有限公司 A kind of compound body of roll production method of bimetallic
CN109127734A (en) * 2018-09-06 2019-01-04 湖南三泰新材料股份有限公司 Roll sleeve, the manufacturing method of roll sleeve and roll
CN109127734B (en) * 2018-09-06 2020-05-22 湖南三泰新材料股份有限公司 Roll sleeve, method for producing roll sleeve, and roll

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