CN1165062A - Founding compound material cold rolled roller and its production technology - Google Patents
Founding compound material cold rolled roller and its production technology Download PDFInfo
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- CN1165062A CN1165062A CN 96115788 CN96115788A CN1165062A CN 1165062 A CN1165062 A CN 1165062A CN 96115788 CN96115788 CN 96115788 CN 96115788 A CN96115788 A CN 96115788A CN 1165062 A CN1165062 A CN 1165062A
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Abstract
A composite cold roller is made up by casting method, in which its shell of cast alloy iron is attached to steel core, and features simple making process, low cost, high strength, toughness and surficial hardness, and long service life.
Description
Founding compound material cold rolled roller mainly is to replace existing general simple alloy-steel roll, is used for the steel of cold rolling various models and the sheet material of other material.
Reach according to the retrieval and investigate, domestic cold roll mainly is that 9Cr2Mo or GCr15 steel alloy are made through technologies such as forging, machined, nitrogencase hardenings at present.The defective of this roll maximum is exactly under big calendering force effect, quench-hardened case surfacial spalling phenomenon occurs, has a strong impact on the service life of roll; And the raw material costliness, manufacturing process complexity, production cost height.The alloy ductile iron cold roll that occurs of latest domestic besides, this roll all with the alloy nodular cast iron cast after isothermal hardening and machined form, major defect is that body surface hardness is not high, the quality of influence of rolled plate; It is frequent that case hardness improves back roll brittle fracture, and toughness is not enough.Also having a kind of report is the iron and steel composite roller, and body surface forms with the centrifugal casting mode, and inside, roll neck and transmission side all use whole steel alloy, and both add hot jacket after processing, be pressed into by force.The shortcoming of this roll is exactly that both must Precision Machining, and, has " two skins " phenomenon in conjunction with insecure.
The object of the present invention is to provide a founding compound material cold rolled roller and a production technology thereof not only scientific and reasonable but also economical and practical, that adopt casting method to produce, to overcome the drawback that exists in existing roll self and the manufacturing process, produce high-quality, low cost, have stronger comprehensive mechanical performance, the cold roll of cheap, long service life.
Principle of the present invention is according to steel alloy higher mechanical strength and bigger toughness to be arranged, and alloy cast iron has higher hardness and this principle of good wear resistance, both are organically combined, get both length, keep away both weak point, and produce with the founding mode, overcome with plunging in conjunction with not firm shortcoming.
Founding compound material cold rolled roller of the present invention (seeing accompanying drawing) is made up of steel core (1) and roll shell (2).Roll shell (2) founding is on steel core (1), and just the liquid alloy pig iron by melting casts directly on steel core (1) surface, forms roll shell (2).The material of steel core (1) can be selected suitable structural alloy steel for use according to working condition; The material of roll shell (2) also can be selected required alloy cast iron for use according to working condition.
The main process of the production of founding compound material cold rolled roller is: according to cold roll finished product drawing, intercept corresponding structural alloy steel as steel core (1), and carry out plucking and handle, according to the size of the part of the body of roll in the cold roll finished product, design and manufacture required moulding by casting metal mold again.Steel core (1) and metal mold are heated to the laggard luggage of suitable temperature (steel core (1) is higher, metal mold is lower) respectively join, form the cold roll mold.Form die cavity between steel core (1) and the metal mold, the alloy cast iron that melting is handled well is poured into a mould, form roll shell (2), and founding is made the founding compound material cold rolled roller blank on steel core (1); Again this blank is carried out roughing, heat treatment, fine finishining, make founding compound material cold rolled roller.Technology for Heating Processing can select to strengthen normalizing or quenching as required, main purpose be eliminate stress, gain in strength, comprehensive mechanical performance such as hardness.
Advantage of the present invention: the cold roll that this explained hereafter is come out, body of roll shell (2) part is to be made by alloy cast iron, after heat treatment, form martensite+bainite+paralympic complex tissue that waits, mainly be martensite, its case hardness and microhardness are all very high, and because be complex tissue the hardness transition is even again, peeling phenomenon can not appear; And transmission side and roll neck are the steel cores made from steel alloy (1), and after heat treatment, mechanical strength and toughness are all higher, by original Roller Design size, can meet the demands fully, brittle failure and other phenomenon of rupture can not occur.This founding combination can fuse into one alloy cast iron shell (2) and steel core (1) fully, and particularly processing of steel core (1) plucking and preheat temperature are higher, more can fully melt, and are integrated, and have overcome the shortcoming of forced " two skins ".Therefore, the cold roll of this explained hereafter has intensity height, good toughness, case hardness height, advantages such as wearability is good, manufacturing process is simple, cost is low, long service life, is to produce the more satisfactory technology of various cold rolls at present.
Claims (2)
1, a kind of founding compound material cold rolled roller of being made up of roll shell (2), steel core (1) is characterized in that said roll shell (2) founding is on steel core (1).
2, according to the said founding compound material cold rolled roller of claim 1, it is characterized in that the production technology of founding compound material cold rolled roller is: intercept corresponding structural alloy steel as steel core (1), and carry out plucking and handle; Size design according to body of roll part produces the metal mold that moulding by casting is used; Steel core (1) and metal mold are heated to the laggard luggage of suitable temperature respectively joins; The alloy cast iron that melting is handled well is poured into a mould, made the founding compound material cold rolled roller blank; Again this blank is carried out roughing, heat treatment, fine finishining, make founding compound material cold rolled roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115788 CN1165062A (en) | 1996-05-13 | 1996-05-13 | Founding compound material cold rolled roller and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115788 CN1165062A (en) | 1996-05-13 | 1996-05-13 | Founding compound material cold rolled roller and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1165062A true CN1165062A (en) | 1997-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96115788 Pending CN1165062A (en) | 1996-05-13 | 1996-05-13 | Founding compound material cold rolled roller and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1165062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273041A (en) * | 2013-05-23 | 2013-09-04 | 江苏久联冶金机械制造有限公司 | Processing method for materials of foreplate on rolling mill |
-
1996
- 1996-05-13 CN CN 96115788 patent/CN1165062A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273041A (en) * | 2013-05-23 | 2013-09-04 | 江苏久联冶金机械制造有限公司 | Processing method for materials of foreplate on rolling mill |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |