Method and an apparatus for manufacturing wire
AssigneeDaido Tokushuko Kabushiki Kaisha
InventorKohachiro Ohashi
Life of this patent
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Abstract
The rolling apparatus 1 comprises a first roller-couple 101a,101b and a second roller-couple 102a,102b which are arranged adjacently in a feeding direction of work material A1 and roll the work material A1 in different directions each other successively. Each of the first and second roller-couples comprises two rollers each of which has a groove for determining the cross sectional shape of the wire on the circumferential surface thereof. The width of the grooves are less than 7 mm for the first roller-couple 101a,101b and are less than 6 mm for the second roller-couple 102a,102b. The center distance between the first and second roller-couples 101a,101b and 102a,102b is less than 50 mm.
Claims43
A method for manufacturing wire by rolling work material successively with a first roller-couple and a second roller-couple which are arranged adjacently in a feeding direction of said work material and roll said work material in different directions each other,
- wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is a center distance between said first and second roller-couples, and D is a wire diameter obtained after the rolling by said second roller-couple;
- and wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm.
A method for manufacturing wire by hot-rolling work material comprising the steps of:
- continuously removing scale formed on work material in continuous feeding by using a scale-removing device arranged on the passage of said work feeding;
- heating said work material after the removal of said scale by using a heating device which comprises an electrode contacting with said work material allowing the continuous feeding thereof and sending electric current into said work material through said electrode for resistance-heating of said work material;
- rolling heated work material by using a rolling mill so that resulting diameter of wire is less than 5.5 mm;
- wherein said rolling mill comprises a first roller-couple and a second roller-couple which are arranged adjacently in the feeding direction of said work material and successively roll said work material in different direction each other;
- wherein said first and second roller-couples are arranged so that L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is the wire diameter obtained after the rolling by said second roller-couple and,
- wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%.
A method for manufacturing wire by hot-rolling work material comprising the steps of:
- heating said work material in continuous feeding by using a heating device which is arranged on the passage of said feeding and comprises an induction heating coil for continuously heating said work material;
- rolling heated work material by using a rolling mill so that the resulting diameter of the wire is less than 5.5 mm;
- wherein said rolling mill comprises a first roller-couple and a second roller-couple which are arranged adjacently in the feeding direction of said work material and successively roll said work material in different directions from each other,
- and wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is the wire diameter obtained after rolling by said second roller-couple.
A method for manufacturing wire by rolling work material successively with a first roller-couple and a second roller couple which are arranged adjacently in a feeding direction of said work material and roll said work material in different directions from each other,
- wherein rolling reduction against said work material by each roller-couple is varied according to the variety of said work material, and the ratio, R1/R2, where R1 and R2 are roller-rotation rates of said first and second roller-couples, respectively, is adjusted according to said rolling reduction,
- wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is the wire diameter obtained after rolling by said second roller-couple;
- and
- wherein said work material is rolled by said roller-couples so that the reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less that 5.5 mm.
A method for manufacturing wire by rolling work material successively with a first roller-couple and a second roller-couple which are arranged adjacently in a feeding direction of said work material an roll said work material in different directions from each other,
- wherein said first and second roller-couples are arranged so that ratio of L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is the wire diameter obtained after the rolling by said second roller-couple which is 5.5 mm or less;
- wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm,
- and wherein resulting diameter of wire is varied in a designated range by changing the rolling reductions in said first and second roller-couples against said work material in a corresponding range.
An apparatus for manufacturing wire comprising;
- a first roller-couple and a second roller-couple which are arranged adjacently in a feeding direction of work material and roll successively said work material in different directions from each other;
- wherein each of said first and second roller-couples comprises two rollers having grooves on the circumferential surface thereof for forming a sizing pass which determines cross sectional shape of said wire;
- wherein the width of said grooves are less than 7 mm for said first roller-couple;
- wherein the width of said grooves are less than 6 mm for said second roller-couple;
- wherein the center distance between said first and second roller-couples is less than 50 mm,
- wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is a center distance between said first and second roller-couples, and D is a wire diameter obtained after the rolling by said second roller-couple;
- and wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm.
An apparatus for manufacturing wire comprising:
- a first roller-couple and a second roller-couple which are arranged adjacently in a feeding direction of work material and roll successively said work material in different directions each other;
- wherein clearance formed between two rollers is less than 7 mm for said first roller-couple;
- wherein clearance formed between two rollers is less than 6 mm for said second roller-couple;
- and wherein the center distance between said first and second roller-couples is less than 50 mm,
- wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is a center distance between said first and second roller-couples, and D is a wire diameter obtained after the rolling by said second roller-couple;
- and wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm.
An apparatus for manufacturing wire comprising;
- a scale-removing device which is arranged on the passage of feeding of work material and continuously removes the scale formed on said work material in continuous feeding;
- a heating device for heating said work material after the removal of said scale comprising an electrode contacting with said work material allowing the feeding thereof and sending electric current into said work material through said electrode for resistance-heating said work material;
- a rolling mill which comprises a first roller-couple and a second roller-couple which are arranged adjacently in the direction of work material transportation and roll said work material successively in different directions from each other so that L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is the wire diameter obtained after the rolling by said second roller-couple,
- and wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm.
An apparatus for manufacturing wire comprising:
- a heating device comprising an induction heating coil for heating work material in continuous feeding which is arranged on the way of said feeding;
- a rolling mill which comprises a first roller-couple and a second roller-couple which are arranged adjacently in the feeding direction of said work material and roll said work material successively in different directions each other so that L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is the wire diameter obtained after the rolling by said second roller-couple,
- and wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm.
An apparatus for manufacturing wire by rolling work material successively with a first roller-couple and a second roller-couple which are arranged adjacently in a feeding direction of said work material and roll said work material in different directions from each other,
- wherein rolling reduction against said work materially each roller-couple is varied according to the variety of said work material, and the ratio, R1/R2, where R1 and R2 are roller-rotation rates in said first and second roller-couples, respectively, is adjusted according to said rolling reduction,
- wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is a wire diameter obtained after the rolling by said second roller-couple;
- and wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm.
An apparatus for manufacturing wire by rolling work material successively with a first roller-couple and a second roller-couple which are arranged adjacently in a feeding direction of said work material and roll said work material in different directions from each other,
- wherein said first and second roller-couples are arranged so that the ratio of L/D is less than 30, where L is the center distance between said first and second roller-couples, and D is a wire diameter obtained after the rolling by said second roller-couple;
- wherein said work material is rolled by said roller-couples so that reduction of area of said work material achieved by each roller-couples is 5-35%, and resulting wire diameter is less than 5.5 mm, and
- wherein resulting wire diameter is varied in a designated range by changing the rolling reductions in said first and second roller-couples against said work material in a corresponding range.
Dependencies are inferred from the claim text.