CN105195560A - Supporting roller of straightening machine - Google Patents
Supporting roller of straightening machine Download PDFInfo
- Publication number
- CN105195560A CN105195560A CN201510703317.6A CN201510703317A CN105195560A CN 105195560 A CN105195560 A CN 105195560A CN 201510703317 A CN201510703317 A CN 201510703317A CN 105195560 A CN105195560 A CN 105195560A
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- CN
- China
- Prior art keywords
- backing roll
- axle journal
- flattener
- supporting roller
- nitriding treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention provides a supporting roller of a straightening machine. The supporting roller of the straightening machine comprises a roller body, journals and nitriding treatment areas. The journals are arranged on the side edges of the roller body and connected with the roller body. The nitriding treatment areas are located on the outer sides of the journals and formed through nitriding treatment. According to the supporting roller of the straightening machine, conical surfaces at the journals are transformed into cylindrical surfaces, the nitriding treatment areas are formed through ionic nitriding treatment, conical sleeves are omitted, the machining process of the supporting roller can be simplified, the integral strength of the supporting roller can be increased, the risk of fracturing at the journals can be lowered, the bearing capability of the supporting roller can be remarkably improved, the reliability and stability of the straightening machine are improved, and high economic benefits are achieved.
Description
Technical field
The present invention relates to roller system of straightening machine technical field, particularly a kind of flattener backing roll.
Background technology
Straightener is a kind of common device of steel rolling mill's steel plate straightening, for aligning shape, bar, tubing, wire rod etc.Straightener carries out extruding by roll assembly to bar etc. makes it change linearity, wherein, roll assembly comprises smoothing roll, intermediate calender rolls, backing roll etc., the quality of its performance and service condition, directly impact produce operating rate and cost, product seed output and quality etc., so roll assembly is one of spare part of most critical during aligning is produced.
In actual production, due to many reasons, such as: workpiece and roller directly contact the manufacturing defect etc. of contact stress, thermal stress, shear stress, residual stress and the roller caused itself, a large amount of consumption of roller are caused in capital, so that straightener is forced to descend machine in advance in normal life cycle, even abnormal scrap, these all have a strong impact on production.
As depicted in figs. 1 and 2, tradition flattener backing roll has a roll body 1 and axle journal 11, axle journal place has a cone structure, its cone angle is a, the tapered sleeve 12 be mated is had in the surface coverage of this cone structure, backing roll and bearing are by interference fit, and re-use tapered sleeve 12 location bearing inner ring and make it not move axially, tapered sleeve 12 outer surface seals with transparent cover and contacts.Ideally tapered sleeve 12 should fit tightly with the cone structure of axle journal 11, but because axle journal 11 and tapered sleeve 12 exist the factor such as mismachining tolerance and part deformation, make the two be difficult to fit tightly, the fitting surface of reconditioning cone structure and the fitting surface of tapered sleeve just can complete installation to need repeatedly.
Backing roll One's name is legion in straightener, each conical surface must reconditioning, and assembling is wasted time and energy, and has had a strong impact on the production efficiency of straightener.In addition, due to production error and assembling reconditioning, assemble between rear cone structure and the binding face of tapered sleeve and also can there is gap, if such backing roll is applied on straightener, when in use running into shock loading, tapered sleeve unbalance stress can be caused, so that crack damage, have a strong impact on the use of straightener.
Summary of the invention
Prior art with not enough and shortcoming for overcoming, the invention provides a kind of flattener backing roll, simplify the processing technology of backing roll, and improve the bulk strength of backing roll.
On the one hand, the invention provides a kind of flattener backing roll, described flattener backing roll comprises:
Roll body;
Axle journal, is arranged at the side of described roll body and is connected with described roll body;
Nitrizing Treatment district, is positioned at the outside of described axle journal, is formed through Nitrizing Treatment.
In an embodiment of flattener backing roll of the present invention, described axle journal is column structure.
In another embodiment of flattener backing roll of the present invention, described flattener backing roll comprises multiple described Nitrizing Treatment district.
In another embodiment of flattener backing roll of the present invention, described Nitrizing Treatment district is formed through ion Plasma Nitriding Treatment.
In another embodiment of flattener backing roll of the present invention, described Nitrizing Treatment district, through making nitrogenous gas ionize in DC electric field in vacuum tank, obtains cation and the ion Plasma Nitriding Treatment using the surface of axle journal described in described positive ion bombardment and form nitration case is formed.
In another embodiment of flattener backing roll of the present invention, the pressure of described vacuum tank inside is 13.3 ~ 1333Pa.
Flattener backing roll of the present invention changes the conical surface at axle journal place into the face of cylinder and adopts ion Plasma Nitriding Treatment to form Nitrizing Treatment district, eliminate the configuration of tapered sleeve, the processing technology of backing roll can be simplified, improve the bulk strength of backing roll, reduce the risk of axle journal place fracture, the bearing capacity of remarkable increase backing roll, improves the reliability and stability of straightener, has higher economic benefit.
Accompanying drawing explanation
Fig. 1 is the installation diagram of traditional flattener backing roll and bearing;
Fig. 2 is the profile of traditional flattener backing roll;
Fig. 3 is the profile of the flattener backing roll of one embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1: roll body
11: axle journal
12: tapered sleeve
3: roll body
31: axle journal
32: Nitrizing Treatment district
R1, R2: knuckle
D11: tapered sleeve external diameter
D21: backing roll diameter
D12, d22: shaft shoulder distance
Detailed description of the invention
According to specific embodiment, technical scheme of the present invention is described further below.Protection scope of the present invention is not limited to following examples, enumerates these examples and does not only limit the present invention in any way for exemplary purpose.
Fig. 3 is the profile of the flattener backing roll of one embodiment of the present invention, and as shown in Figure 3, flattener backing roll comprises roll body 3, and axle journal 31 is arranged at two sides of roll body 3 and is connected with roll body 3; Nitrizing Treatment district, is positioned at the outside of axle journal 31, is formed through Nitrizing Treatment.
Shape and the bearing to be assembled of axle journal 31 match, such as, be cylindrical.
Nitrizing Treatment district 32 and axle journal 31 are formed in one and are formed, and it can be obtained through ion Plasma Nitriding Treatment by the subregion of axle journal 31.
The method forming Nitrizing Treatment district 32 used includes but not limited to: first form axle journal 31, then carry out ion Plasma Nitriding Treatment to form Nitrizing Treatment district 32 to the local of axle journal 31.
As shown in Figure 3, the left side of roll body 3 and right side respectively comprise an axle journal 31, each axle journal 31 comprise Liang Ge Nitrizing Treatment district 32.
In the scope in Nitrizing Treatment district 32, shape, size and Fig. 1, tapered sleeve outer surface is consistent, and is roughly the cylindrical region at axle journal 31 place.
The size relationship of flattener backing roll of the present invention and traditional flattener backing roll is:
Diameter d 21=d11, the shaft shoulder apart from d22=d12, excessive fillet R2=R1, namely flattener backing roll of the present invention with the measure-alike of traditional flattener backing roll of tapered sleeve be equipped with, to ensure that it assembles.
Ion Plasma Nitriding Treatment is included in vacuum tank and nitrogenous low density gas is ionized in DC electric field, obtain cation and use the surface of positive ion bombardment metal parts (such as axle journal) and form nitration case, it all has significant nitriding result for spheroidal graphite cast-iron, steel alloy, stainless steel, sintered metal product, titanium alloy, high-speed steel and tool steel etc.
Ion Plasma Nitriding Treatment effectively can process columniform axle journal, improves its case hardness, wearability, fatigue strength, seizure resistance, Chinese People's Anti-Japanese Military and Political College's gas and superheated steam corrosive power, anti-temper softening ability, and reduces notch sensitivity.
In addition, ion Plasma Nitriding Treatment can not cause distortion, is therefore specially adapted to manufacture flattener backing roll of the present invention.
The pressure of above-mentioned vacuum tank inside is preferably 13.3 ~ 1333Pa.
In sum, flattener backing roll of the present invention changes the conical surface at axle journal place into the face of cylinder and adopts ion Plasma Nitriding Treatment to form Nitrizing Treatment district, eliminate the configuration of tapered sleeve, not only simplify processing technology and the assemble flow of backing roll, achieve energy-saving and cost-reducing, save the production cost of straightener, also improve the bulk strength of backing roll, reduce the risk of axle journal place fracture, significantly increase the bearing capacity of backing roll, improve the reliability and stability of straightener, have higher economic benefit.
Those skilled in the art it should be noted that embodiment described in the invention is only exemplary, can make other replacements various, changes and improvements within the scope of the invention.Thus, the invention is not restricted to above-mentioned embodiment, and be only defined by the claims.
Claims (6)
1. a flattener backing roll, is characterized in that, described flattener backing roll comprises:
Roll body;
Axle journal, is arranged at the side of described roll body and is connected with described roll body;
Nitrizing Treatment district, is positioned at the outside of described axle journal, is formed through Nitrizing Treatment.
2. flattener backing roll according to claim 1, is characterized in that, described axle journal is column structure.
3. flattener backing roll according to claim 1, is characterized in that, described flattener backing roll comprises multiple described Nitrizing Treatment district.
4. flattener backing roll according to claim 1, is characterized in that, described Nitrizing Treatment district is formed through ion Plasma Nitriding Treatment.
5. flattener backing roll according to claim 4, it is characterized in that, described Nitrizing Treatment district, through making nitrogenous gas ionize in DC electric field in vacuum tank, obtains cation and the ion Plasma Nitriding Treatment using the surface of axle journal described in described positive ion bombardment and form nitration case is formed.
6. flattener backing roll according to claim 5, is characterized in that, the pressure of described vacuum tank inside is 13.3 ~ 1333Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703317.6A CN105195560A (en) | 2015-10-26 | 2015-10-26 | Supporting roller of straightening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703317.6A CN105195560A (en) | 2015-10-26 | 2015-10-26 | Supporting roller of straightening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105195560A true CN105195560A (en) | 2015-12-30 |
Family
ID=54943705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510703317.6A Pending CN105195560A (en) | 2015-10-26 | 2015-10-26 | Supporting roller of straightening machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105195560A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153377A (en) * | 2006-09-27 | 2008-04-02 | 宝山钢铁股份有限公司 | Leveler roll and manufacturing process thereof |
| CN202555630U (en) * | 2012-04-17 | 2012-11-28 | 安徽米特吉机械股份有限公司 | Steel pipe straightening roll |
| CN202638965U (en) * | 2012-04-28 | 2013-01-02 | 宝山钢铁股份有限公司 | Bearing roller for straightening machine |
| KR20140142385A (en) * | 2013-05-31 | 2014-12-12 | 현대제철 주식회사 | Method for improving surface hardness of work roll |
| CN204018666U (en) * | 2014-07-25 | 2014-12-17 | 马钢(集团)控股有限公司 | A kind of shaped sectional roll of continuous casting |
-
2015
- 2015-10-26 CN CN201510703317.6A patent/CN105195560A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153377A (en) * | 2006-09-27 | 2008-04-02 | 宝山钢铁股份有限公司 | Leveler roll and manufacturing process thereof |
| CN202555630U (en) * | 2012-04-17 | 2012-11-28 | 安徽米特吉机械股份有限公司 | Steel pipe straightening roll |
| CN202638965U (en) * | 2012-04-28 | 2013-01-02 | 宝山钢铁股份有限公司 | Bearing roller for straightening machine |
| KR20140142385A (en) * | 2013-05-31 | 2014-12-12 | 현대제철 주식회사 | Method for improving surface hardness of work roll |
| CN204018666U (en) * | 2014-07-25 | 2014-12-17 | 马钢(集团)控股有限公司 | A kind of shaped sectional roll of continuous casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |