CN101147969A - Roller and its forming mould and forming technology - Google Patents
Roller and its forming mould and forming technology Download PDFInfo
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- CN101147969A CN101147969A CNA2007102024941A CN200710202494A CN101147969A CN 101147969 A CN101147969 A CN 101147969A CN A2007102024941 A CNA2007102024941 A CN A2007102024941A CN 200710202494 A CN200710202494 A CN 200710202494A CN 101147969 A CN101147969 A CN 101147969A
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Abstract
The present invention relates to a kind of roll. It includes alloy layer of roll surface and grey cast iron layer set on the roll neck portion. Said invention also relates to a die for preparing above-mentioned mold roll, it includes external cold-mold, end covers of two ends of said cold-mold and fire-proofing coating layer, in which the end portion of one end cover is equipped with a fixed core frame, said fixed core frame is connected with a central tube positioned in the centre of cold-mold interior, and the exterior of said central tube is equipped with a formed core portion fire-proofing coating layer. The forming process for making above-mentioned roll by using above-mentioned forming die is characterized by that it adopts a centrifugal casing method, firstly, it utilizes opening end of said die to pour the molten alloy to form alloy layer of roll surface portion, then pour molten cast iron to form roll surface interior and cast iron layer of roll neck portion.
Description
Technical field
The present invention relates to a kind of roll and former thereof and moulding process, more particularly, relate to and preferentially be used in rolling rod and being used to improve the former and the method for rolling the rod structure in the mill of XK type.
Background technology
The roll of prior art adopts the method manufacturing of static moulding by casting mostly.Especially the roll in the mill of XK type all adopts static cast.Problem is, the roll manufacture method of prior art, and owing to roll surface, axle journal all adopt alloy material, so required alloy large usage quantity.Simultaneously, because the method for static cast, mottled cast iron can appear in finished product, and then influences the intensity and the service life of roll.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of roll of architecture advances is provided, be particularly useful for the mill of XK type.The present invention also provides the mould and the manufacturing process of this type of roll.Its purpose is, thereby is primarily aimed at this type of roll of prior art owing to adopt static pouring forming technology to cause the problem that roll strength is low, service life is poor.This series products alloy consumption that has solved prior art simultaneously is big, cost is high, the waste problem of resource.
In order to address the above problem, a kind of roll that the present invention designs comprises the outer alloy-layer that is provided with of roll surface part, and the grey cast-iron layer of the inside of roll surface part and the setting of roll neck portion.The present invention has also designed the mould that is used for molding roller, comprise outside cold mould, the end cap and the fireproof coating layer at cold mould two ends, wherein, the end of an end cap is provided with the fixed core frame, the fixed core frame connects the central tube that is positioned at the cold mould inside center, and the central tube outer setting has the core fireproof coating layer of moulding.Therefore, the moulding technique that utilizes above-mentioned mould to process above-mentioned roll is, adopt centrifugal casting technique, at first by the alloy-layer of mould openings end cast melt alloy format roll face portion, next pours into a mould the inner and roll neck cast iron layer partly of melt cast iron moulding roll surface.
Wherein, under the optimal way, alloy layer thickness is selected Ni, Cr, Mo or Cu, Cr alloy for use between the 15-30 millimeter.
In addition, above-mentioned roll mould, its fixed core frame comprise the support body of the end cap that is used to be connected, and the support body center is associated with central tube by Bearning mechanism.
By technique scheme, roll of the present invention not only saved alloy consumption, reduced cost, and intensity, wearability, service life all significantly improve than prior art.And by adopting mould provided by the invention and moulding process, casting method for centrifugal can be saved alloy material with centrifugal casting mode one-shot forming roll, and assurance is the alloy material except that the roll surface skin, all the other all are grey cast-iron, do not have the problem of mottled cast iron.Therefore the present invention is having marked improvement than prior art aspect economic worth and the use value two.
Description of drawings
Below in conjunction with specific embodiment, with reference to the accompanying drawings further specify of the present invention.
Fig. 1 is a roll shaped structures schematic diagram of the present invention;
Fig. 2 is the decomposing schematic representation of molding roller among Fig. 1.
The specific embodiment
Roll of the present invention as shown in Figure 2 comprises the outer alloy-layer 41 that is provided with of roll surface, and the grey cast-iron layer 42 of the inside of roll surface part and the setting of roll neck portion.(clear, among the figure with two parts exploded representation) in order to show.Wherein, under the optimal way, alloy layer thickness is selected Ni, Cr, Mo or Cu, Cr alloy for use between 1530 millimeters; For example 20 millimeters Ni, Cr, Mo alloy or 25 millimeters Cu, Cr alloy.
Referring to the mould of roll finished product 4 among moulding Fig. 2 shown in Figure 1, comprise outside cold mould 3, the end cap 1 at cold mould 3 two ends and the fireproof coating layer 2 of end cap 1 inside; Wherein the shape of fireproof coating layer and cold mould is by the shape decision of desire system roll finished product, and the outside of cold mould also is provided with cold mould track 7 among the figure.In addition, the end of right side end cap 1 is provided with fixed core frame 6, and fixed core frame 6 connects the central tube 8 that is positioned at cold mould 3 inside, and central tube 8 outer setting have the core fireproof coating layer 5 of moulding, and the shape of fireproof coating layer 5 is determined by desire system roll as shown in the figure.
Under the comparatively firm situation of fireproof coating layer 5, central tube 8 can maintain static, and therefore corresponding fixed core frame adopts fixed form to get final product.But, generally owing to can be to fireproof coating layer 5 generation power from the reason of core cast, thereby simultaneously because fireproof coating layer 5 very firmly can not cause damage; Therefore, under the optimal way,, need specialized designs fixed core frame 6 in order to improve service life.As shown in Figure 1, fixed core frame 6 comprises the support body of the end cap 1 that is used to be connected, the support body center is provided with body by Bearning mechanism, the fixedly sleeved central tube 8 of body, so that central tube 8 can rotate, thereby can rotate when making fireproof coating layer 5 stressed, reduce the damage of external force, improve service life coating.Under the optimal way, the structure that Bearning mechanism is associated with central tube 8 adopts welding manner or one mode, needs realization central tube 8 to finish gyration under Bearning mechanism is auxiliary.
And the moulding process that the present invention utilizes above-mentioned mould to process above-mentioned roll comprises, adopt centrifugal casting technique, at first by the alloy-layer 41 of mould openings end cast melt alloy format roll face portion, next pours into a mould the inner and roll neck cast iron layer 42 partly of melt cast iron moulding roll surface.
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (6)
1. roll mould, comprise outside cold mould (3), the end cap (1) and the fireproof coating layer at described cold mould (3) two ends, it is characterized in that, the end of a described end cap (1) is provided with fixed core frame (6), described fixed core frame (6) connects the central tube (8) that is positioned at described cold mould (3) inside center, and described central tube (8) outer setting has the core fireproof coating layer (5) of moulding.
2. roll mould according to claim 1 is characterized in that, described fixed core frame (6) comprises the support body of described end cap (1) that is used to be connected, and described support body center is associated with described central tube (8) by Bearning mechanism.
3. a roll is characterized in that, comprises the outer alloy-layer (41) that is provided with of roll surface part, and the grey cast-iron layer (42) of the inside of roll surface part and the setting of roll neck portion.
4. roll according to claim 3 is characterized in that, described alloy-layer (41) thickness is the 15-30 millimeter.
5. roll according to claim 4 is characterized in that, described alloy-layer (41) is Ni, Cr, Mo or Cu, Cr alloy.
6. moulding process that utilizes above-mentioned mould to process above-mentioned roll, it is characterized in that, adopt centrifugal casting technique, at first by the alloy-layer (41) of mould openings end cast melt alloy format roll face portion, next pours into a mould the inner and roll neck cast iron layer (42) partly of melt cast iron moulding roll surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102024941A CN101147969A (en) | 2007-11-12 | 2007-11-12 | Roller and its forming mould and forming technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102024941A CN101147969A (en) | 2007-11-12 | 2007-11-12 | Roller and its forming mould and forming technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101147969A true CN101147969A (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007102024941A Pending CN101147969A (en) | 2007-11-12 | 2007-11-12 | Roller and its forming mould and forming technology |
Country Status (1)
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| CN (1) | CN101147969A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019402A (en) * | 2010-12-22 | 2011-04-20 | 中钢集团邢台机械轧辊有限公司 | Cold-type casting welding method of roller necks |
| CN101786147B (en) * | 2009-01-22 | 2012-03-14 | 大连宝锋机器制造有限公司 | Centrifugal casting method for centrifugal compound hollow rolls |
| CN102632217A (en) * | 2012-05-10 | 2012-08-15 | 无锡布勒机械制造有限公司 | Centrifugal casting mold for bimetallic composite chilled cast iron roll |
| CN103894575A (en) * | 2012-12-27 | 2014-07-02 | 常州凯达重工科技有限公司 | Method and dedicated roller body shaping device for producing grooved cast roller through centrifugal method |
| CN105817595A (en) * | 2015-01-07 | 2016-08-03 | 大连宝锋机器制造有限公司 | Pouring method of centrifugal compound hollow roll |
| CN107186200A (en) * | 2017-06-16 | 2017-09-22 | 重庆理工大学 | Metallurgical binding is molded between reinforcing double-level-metal method and mould |
-
2007
- 2007-11-12 CN CNA2007102024941A patent/CN101147969A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786147B (en) * | 2009-01-22 | 2012-03-14 | 大连宝锋机器制造有限公司 | Centrifugal casting method for centrifugal compound hollow rolls |
| CN102019402A (en) * | 2010-12-22 | 2011-04-20 | 中钢集团邢台机械轧辊有限公司 | Cold-type casting welding method of roller necks |
| CN102019402B (en) * | 2010-12-22 | 2012-08-08 | 中钢集团邢台机械轧辊有限公司 | Cold-type casting welding method of roller necks |
| CN102632217A (en) * | 2012-05-10 | 2012-08-15 | 无锡布勒机械制造有限公司 | Centrifugal casting mold for bimetallic composite chilled cast iron roll |
| CN103894575A (en) * | 2012-12-27 | 2014-07-02 | 常州凯达重工科技有限公司 | Method and dedicated roller body shaping device for producing grooved cast roller through centrifugal method |
| CN105817595A (en) * | 2015-01-07 | 2016-08-03 | 大连宝锋机器制造有限公司 | Pouring method of centrifugal compound hollow roll |
| CN107186200A (en) * | 2017-06-16 | 2017-09-22 | 重庆理工大学 | Metallurgical binding is molded between reinforcing double-level-metal method and mould |
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Open date: 20080326 |