CN1037850A - The friction slitting pass and the roll of hot-rolled steel ingot or steel bloom - Google Patents
The friction slitting pass and the roll of hot-rolled steel ingot or steel bloom Download PDFInfo
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- CN1037850A CN1037850A CN 89100154 CN89100154A CN1037850A CN 1037850 A CN1037850 A CN 1037850A CN 89100154 CN89100154 CN 89100154 CN 89100154 A CN89100154 A CN 89100154A CN 1037850 A CN1037850 A CN 1037850A
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- groove
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Abstract
The present invention relates to the pass design of metal rolled industry, be mainly used in the cogging operation that shaped steel is produced.General two grooves play the effect of cutting simultaneously.The present invention is made up of two different grooves of effect, and one of them groove specially plays rubbing action makes blank be easy to wedging, and this groove is designed to the shape of approximate supplied materials, and another groove then specially plays the cutting effect, the steel billet thickness H of employing
0Can reach 0.4 to 0.42 times of roller diameter, i.e. H
0=(0.4～0.42) D.
Description
The present invention relates to the pass design of the rolling industry of metal (ferrous and nonferrous metals), be mainly used in the cogging operation that shaped steel is produced.
Used steel billet thickness H can not be greater than 0.3 times of roller diameter D, i.e. H≤0.3D when shaped steel was produced at present.
The steel billet thickness H that the present invention uses can reach 0.4～0.42 of roller diameter D, i.e. H=(0.4～0.42) D
The use of splitting rolling method at present is only limited to a wide material is cut into several narrow material, does not solve steel billet thickness H from the further problem that increases of the 0.3D of routine.
The purpose of this invention is to provide a kind of billet size that less milling train can be enlarged use, saving the investment of building big milling train, and produce the same electric energy that product consumed and also save a lot than present conventional way.
The present invention is achieved in that the section roll pass is made up of the hole slot on two rolls up and down, general syncopation is to use identical or close up and down groove to form, and two grooves play the effect (it is therefore the same with common rolling be subjected to nip angle limit and can not increase the sotck thinkness size) of cutting simultaneously.The present invention is said different with the front.It is made up of two different grooves of effect, that is to say that one of them groove specially plays rubbing action makes blank be easy to wedging.This groove is designed to the shape of approximate supplied materials, and another groove then specially plays the cutting effect, and it once can cut more than 1/4th of sotck thinkness.Therefore the pass of the sotck thinkness H=0.4D of every employing design just can be cut into two halves with blank through two to four roads are rolling.And can continue to be rolled into little blank or section bar.
The present invention compares with existing splitting rolling, and the metal total elongation with splitting rolling method is little more a lot of than common rolling, thereby saves power consumption (the design can save 1/3).Production cost is significantly less than the production cost of additive method in addition.
Fig. 1 is the friction syncopation pass and the roll schematic diagram of hot-rolled steel ingot of the present invention or steel bloom.
The drawing explanation: S is a roll gap between the roll, 1., 2., 3., 4. be the cutting hole of four passes, H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11 is a pass height, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11 is the pass width, on the b1, on the b2, on the b3, on the b4, on the b5, on the b6, on the b7, on the b8, on the b9, on the b10, it on the b11 bottom land width on the pass, under the b1, under the b2, under the b3, under the b4, under the b5, under the b6, under the b7, under the b8, under the b9, under the b10, it under the b11 bottom land width under the pass, C1, C2, C3, C4 is the cutting width, h1, h2, h3, h4 is the cutting degree of depth, it on the D topping roll diameter, being middle roller diameter among the D, is the bottom roll diameter under the D.
Below detail of the invention process is further described: the friction syncopation pass of rolling steel ingot or steel bloom and roll are according to H=(0.40～0.42) method of D, wherein H is steel ingot or steel bloom thickness, and D is the rolling mill roll diameter.
Hmax=(0.4～0.42) D value like this does not reach steel ingot or the steel bloom thickness H that gives choosing yet
0The time (H
0Be known steel ingot or steel bloom thickness), can select for use bigger roll gap S breaker roll diameter to compensate, to increase two roll centre distances, replace D to adjust with two roll centre-to-centre spacing again, meet the requirement of Hmax, roll gap can be selected between S=10～30 millimeter.
The computational methods of each pass.The present invention uses three-high mill can adopt conjugate pass.Here adopting the difference in height between each pass is △ H=5～10 millimeter (△ H is a difference in height), H1=H
0-5Millimeter, H2=H1-5 millimeter, H3=H2-10 millimeter, H4=H3-5 millimeter.
Among the figure 1., 2., 3., 4. four passes are the friction slitting passes in the scope of the invention, are common box-shaped system pass to (11) 5., not within the scope of the invention.
Splitting rolling is that local deformation, absolute spread are bigger than general rolling.
△ B=5～20 millimeter (△ B is an absolute spread)
B1=B2=B0+ △ B(B0 is a width of steel billet)
B3＝B4＝B1+△B
The cutting degree of depth in each hole
h1＝h2≈ (H0)/4
h3＝h4＝h1+ (H0)/4 ±（5～10）
The cutting width in each hole is taked identical numerical value, C1=C2=C3=C4=((D0)/4～(D0)/2)
The bottom land width b1 of each pass goes up, under the b1, under last, the b2 of b2, under last, the b3 of b3, last, the b4 of b4 is inferior is that width B 1, B2, B3, B4 according to pass considers that again 10～15% gradients decide.
Claims (1)
1, a kind of pass design of metal rolled industry, be mainly used in the cogging operation that shaped steel is produced, its section roll pass is made up of the hole slot on two rolls up and down, general syncopation is to use identical or close up and down groove to form, two grooves play the effect of cutting simultaneously, the friction slitting pass that it is characterized in that hot-rolled steel ingot or steel bloom is made up of two different grooves of effect with roll, that is to say, one of them groove specially plays rubbing action makes blank be easy to wedging, this groove is designed to the shape like supplied materials, another groove then specially plays the cutting effect, and it once can cut more than 1/4th of sotck thinkness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89100154A CN1019749B (en) | 1989-01-16 | 1989-01-16 | The roll that is used for the cogging operation with slitting pass system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89100154A CN1019749B (en) | 1989-01-16 | 1989-01-16 | The roll that is used for the cogging operation with slitting pass system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1037850A true CN1037850A (en) | 1989-12-13 |
| CN1019749B CN1019749B (en) | 1992-12-30 |
Family
ID=4853720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89100154A Expired CN1019749B (en) | 1989-01-16 | 1989-01-16 | The roll that is used for the cogging operation with slitting pass system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019749B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306432B (en) * | 2007-05-18 | 2010-10-06 | 新疆八一钢铁股份有限公司 | Round steel splitting rolling technique |
| CN108421827A (en) * | 2018-04-07 | 2018-08-21 | 新疆八钢铁股份有限公司 | A kind of splitting rolling pass |
-
1989
- 1989-01-16 CN CN89100154A patent/CN1019749B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306432B (en) * | 2007-05-18 | 2010-10-06 | 新疆八一钢铁股份有限公司 | Round steel splitting rolling technique |
| CN108421827A (en) * | 2018-04-07 | 2018-08-21 | 新疆八钢铁股份有限公司 | A kind of splitting rolling pass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1019749B (en) | 1992-12-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |