CN111360080A - Pass system and rolling method for rolling titanium and titanium alloy profiles with hexagonal sections - Google Patents
Pass system and rolling method for rolling titanium and titanium alloy profiles with hexagonal sections Download PDFInfo
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- CN111360080A CN111360080A CN202010161630.2A CN202010161630A CN111360080A CN 111360080 A CN111360080 A CN 111360080A CN 202010161630 A CN202010161630 A CN 202010161630A CN 111360080 A CN111360080 A CN 111360080A
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- hexagonal
- pass
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- titanium
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- 238000005096 rolling process Methods 0.000 title claims abstract description 49
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 27
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 27
- 239000010936 titanium Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 27
- 239000010432 diamond Substances 0.000 claims abstract description 27
- 238000005097 cold rolling Methods 0.000 claims abstract description 23
- 238000005098 hot rolling Methods 0.000 claims abstract description 13
- 238000007493 shaping process Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims description 6
- -1 oxide scale Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
Abstract
A pass system and a rolling method for rolling titanium and titanium alloy sections with hexagonal sections are disclosed, wherein the pass system comprises a hot rolling pass and a cold rolling pass, and the hot rolling pass comprises an oval pass, a regular diamond pass, a special hexagonal pass and a regular hexagonal pass; the cold rolling pass is a diamond pass. The rolling method comprises the following steps: and hot rolling the round blank into a square section blank through an oval hole type and a regular diamond hole type, then hot rolling the square section blank through a special hexagonal hole type and a regular hexagonal hole type into a regular hexagonal section blank, and finally cold rolling and shaping the regular hexagonal section blank through the diamond hole type to obtain a finished product section with a regular hexagonal section. The raw material utilization rate is high, the processing efficiency is high, and the production cost is low.
Description
Technical Field
The invention belongs to the technical field of titanium and titanium alloy section bar processing, and particularly relates to a pass system and a rolling method for rolling titanium and titanium alloy section bars with hexagonal sections.
Background
At present, the manufacturing method of the hexagonal section titanium and titanium alloy section bars adopts a bar billet to be hot rolled to the required size and then is polished, and then the polished round section bars are cold rolled into the hexagonal section bars through diamond hole patterns for multiple times, so that the material utilization rate is low, the rolling passes are multiple, the production efficiency is low, and the rolling cost is high.
Disclosure of Invention
The invention provides a pass system and a rolling method for rolling titanium and titanium alloy profiles with rectangular sections, which overcome the defects of the prior art.
The technical scheme includes that the pass system for rolling the titanium and titanium alloy section with the hexagonal section comprises a hot rolling pass and a cold rolling pass, the hot rolling pass comprises an oval pass, a regular diamond pass, a special hexagonal pass and a regular hexagonal pass, the special hexagonal pass is a hexagonal pass which is symmetrical up and down and left and right, an included angle α between the left side and the right side of the hexagonal pass is (97-105) degrees, the upper side and the lower side of the hexagonal pass are circular arcs which are convex towards the center of the pass and are symmetrical to each other, and the cold rolling pass is a rhombic pass.
The arc height A of the circular arc is 0.156 × h, wherein h is the depth of the special hexagonal hole pattern.
The included angle β between the left side and the right side of the rhombic hole type is 120 degrees.
A method for rolling titanium and titanium alloy sections with hexagonal sections by utilizing the pass system,
firstly, heating titanium and titanium alloy blanks, then feeding the titanium and titanium alloy blanks into an oval hole pattern to roll an oval blank, then feeding the oval blank into a regular diamond hole pattern to roll a square blank, then feeding the square blank into the oval hole pattern to roll the oval blank, wherein the oval hole pattern and the regular diamond hole pattern are gradually reduced, and repeatedly rolling in the same way until the square blank with the required specification is rolled;
and secondly, sending the square blank rolled in the first step into a special hexagonal hole pattern to roll out a special hexagonal blank with concave surfaces at the upper and lower surfaces, and then rotating the special hexagonal blank with concave surfaces at the upper and lower surfaces by 90 degrees and sending the special hexagonal blank into a regular hexagonal hole pattern to roll into a hexagonal section blank.
And thirdly, feeding the hexagonal section bar blank obtained in the second step into a diamond groove to perform cold rolling and shaping for 6-9 times, ensuring that four surfaces of the hexagonal section bar blank are respectively contacted with four surfaces of the diamond groove through a guide device during rolling, rotating the blank by 60 degrees after the previous rolling, performing the next rolling, and performing cold rolling and shaping for 2-3 times on each surface of the hexagonal section bar blank through 6-9 times of rolling to obtain a hexagonal section bar finished product.
And (3) putting the hexagonal section blank rolled in the second step into an acid-base pool to finish acid-base washing to remove impurities such as oxide scale, oil stain and the like, and then performing cold rolling and shaping in the third step.
And (3) performing third cold rolling and shaping after repairing the surface of the hexagonal section blank from which impurities such as oxide skin, oil stain and the like are removed.
According to the invention, through innovatively designing a hole type system and optimizing a rolling process, a blank is subjected to hot rolling for a plurality of times through an oval hole type and a regular diamond hole type to form a required square section blank, then the square section blank is subjected to hot rolling through a special hexagonal hole type and a regular hexagonal hole type to form a regular hexagonal section blank, and finally the regular hexagonal section finished product section is obtained through cold rolling and shaping through the diamond hole type.
Drawings
FIG. 1 is a schematic structural view of a pass required for hot rolling according to the present invention;
FIG. 2 is a schematic structural view of a cold rolling pass of the present invention;
FIG. 3 is a schematic structural view of a special hexagonal hole pattern of the present invention;
FIG. 4 is a schematic structural diagram of a hole pattern system according to an embodiment of the present invention;
fig. 5 is a schematic view of the rolling state of the cold rolling pass of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1 to 5 and the embodiments.
A pass system for rolling titanium and titanium alloy sections with hexagonal sections comprises hot rolling passes and cold rolling passes, wherein the hot rolling passes comprise oval passes, regular diamond passes, special hexagonal passes and regular hexagonal passes, the special hexagonal passes are hexagonal passes which are symmetrical up and down and left and right, an included angle α between the left side and the right side of the hexagonal passes is (97-105) ° and the upper side and the lower side of the hexagonal passes are circular arcs which protrude towards the center of the passes and are symmetrical to each other, the cold rolling passes are diamond passes, the arc height A of the circular arcs is 0.156 × h, and h is the depth of the special hexagonal passes.
The included angle β between the left side and the right side of the rhombic hole type is 120 degrees.
Example 1: a method for rolling hexagonal-section titanium and titanium alloy profiles by taking titanium and titanium alloy circular blanks as raw materials.
Firstly, heating a titanium and titanium alloy circular blank with the diameter of 60mm, then rolling the titanium and titanium alloy circular blank into an oval groove 1 with the specification of 80 × mm to roll 47 × 80mm oval blank, then sending the 47 × 080mm oval blank into a regular diamond groove 2 with the specification of 47.5mm to roll to obtain 47.5 ×.147.5 mm square blank, then sending the 47.5 × 247.5mm square blank into an oval groove 3 with the specification of 70 ×.5mm to roll to obtain 40 × mm oval blank, sending the 6340 mm 570 oval blank into a regular diamond groove 4 with the specification of 38.2 × 638.2mm to roll to obtain 38.2mm square blank, sending the 38.2 × 838.2mm square blank into an oval groove 5 with the specification of 58 × 912.5mm to roll, sending the 30 × mm square blank out, sending the 30 × mm square blank into a regular diamond groove 6 with the specification of 686132 mm, sending the 5842 mm square blank out of 5842 mm square groove to roll to obtain an oval groove 5mm square groove 46mm, sending the 30 mm × mm square blank into an oval groove 46mm square groove 46mm blank with the specification of 4632 mm roll to obtain an oval groove 46mm square blank with the specification of 4626 mm 4646 mm, sending the oval groove 46mm square blank of 468 mm square groove 46mm and sending the oval groove 46mm square billet into an oval groove 46mm square billet with the oval groove 46mm roll to obtain;
secondly, feeding 26 × 26mm square blanks into a special hexagonal groove 9 with the specification of 40(L) × 8(h) mm for rolling, rolling to obtain hexagonal blanks with concave surfaces at the upper and lower surfaces of 40 × 18mm, rotating the 40 × 18mm hexagonal blanks by 90 degrees, feeding the hexagonal blanks into a regular hexagonal groove 10 with the specification of 24 × 24 for rolling, and rolling to obtain 24 × 24mm hexagonal section blanks, wherein the included angle α between the left side and the right side of the special hexagonal groove 9 is 100 degrees, and the arc height A of the arc is 0.156 × 8 mm;
thirdly, putting the hexagonal section blank rolled in the second step into an acid-base pool to carry out acid-base washing to remove impurities such as oxide scale, oil stain and the like;
fourthly, performing repairing treatment on the surface of the hexagonal section bar blank after removing impurities such as oxide skin, oil stains and the like, wherein the repairing treatment specifically refers to: polishing surface cracks, removing surface burrs and the like to eliminate surface defects of the section bar blank with the hexagonal section;
fifthly, feeding the hexagonal section blank subjected to the repairing treatment into a diamond groove 11 with the thickness of 40 × 10mm for cold rolling and shaping for 6-9 times, ensuring that four surfaces of the hexagonal section blank are respectively contacted with four surfaces of the diamond groove through a guide device during rolling, rotating the blank for 60 degrees after the previous rolling for the next rolling, and carrying out cold rolling and shaping for 2-3 times on each surface of the hexagonal section blank through 6-9 times of rolling to finally obtain a finished product of the hexagonal section blank with the thickness of 22 × 22 mm;
sixthly, straightening the rolled finished product of the 22 × 22mm hexagonal section bar by a straightening machine to ensure that the product meets delivery requirements.
Example 2: a method for rolling hexagonal section titanium and titanium alloy section bars by using titanium and titanium alloy square blanks.
After heating the square blank of titanium and titanium alloy of 62mm × 62mm, rolling a finished product of a section bar with a hexagonal section of 22 × 22mm according to the steps and hole patterns of the embodiment 1, wherein the specific rolling process is basically the same as the embodiment 1, and the detailed description is omitted.
According to the invention, the square blank is fed into the special hexagonal hole pattern for rolling, the special hexagonal blank with concave surfaces at the upper and lower surfaces is rolled, then the special hexagonal blank is rotated by 90 degrees and fed into the regular hexagonal hole pattern for rolling, and four planes of the special hexagonal blank are extruded to ensure that the two concave surfaces extend outwards and fill and level the inner concave part to form a plane, so that the regular hexagonal section blank is formed, and the square blank has high raw material utilization rate and high processing efficiency. The regular hexagonal section finished section is obtained by cold rolling and shaping the regular hexagonal section blank through the diamond hole pattern, the finished product has good specification and dimension consistency and low production cost.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the scope of the invention, and therefore all equivalent variations made by the following claims should be included in the scope of the invention.
Claims (6)
1. A pass system for rolling titanium and titanium alloy sections with hexagonal sections is characterized by comprising a hot rolling pass and a cold rolling pass, wherein the hot rolling pass comprises an oval pass, a regular diamond pass, a special hexagonal pass and a regular hexagonal pass, the special hexagonal pass is a hexagonal pass which is symmetrical up and down and left and right, an included angle α between the left side and the right side of the hexagonal pass is (97-105) degrees, the upper side and the lower side of the hexagonal pass are circular arcs which protrude towards the center of the pass and are symmetrical to each other, and the cold rolling pass is a diamond pass.
2. A pass system for rolling hexagonal section titanium and titanium alloy sections according to claim 1, wherein the arc height A of the arc is 0.156 × h, wherein h is the depth of the special hexagonal pass.
3. A pass system for rolling hexagonal section titanium and titanium alloy sections according to claim 1 or 2, wherein the left and right included angles β of the diamond pass are 120 °.
4. A method for rolling hexagonal section titanium and titanium alloy sections by using the pass system of claim 1, characterized in that:
firstly, heating titanium and titanium alloy blanks, then feeding the titanium and titanium alloy blanks into an oval hole pattern to roll an oval blank, then feeding the oval blank into a regular diamond hole pattern to roll a square blank, then feeding the square blank into the oval hole pattern to roll the oval blank, wherein the oval hole pattern and the regular diamond hole pattern are gradually reduced, and repeatedly rolling in the same way until the square blank with the required specification is rolled;
and secondly, sending the square blank rolled in the first step into a special hexagonal hole pattern to roll out a special hexagonal blank with concave surfaces at the upper and lower surfaces, and then rotating the special hexagonal blank with concave surfaces at the upper and lower surfaces by 90 degrees and sending the special hexagonal blank into a regular hexagonal hole pattern to roll into a hexagonal section blank.
And thirdly, feeding the hexagonal section bar blank obtained in the second step into a diamond groove to perform cold rolling and shaping for 6-9 times, ensuring that four surfaces of the hexagonal section bar blank are respectively contacted with four surfaces of the diamond groove through a guide device during rolling, rotating the blank by 60 degrees after the previous rolling, performing the next rolling, and performing cold rolling and shaping for 2-3 times on each surface of the hexagonal section bar blank through 6-9 times of rolling to obtain a hexagonal section bar finished product.
5. The method of rolling hexagonal section titanium and titanium alloy profiles according to claim 4, characterized in that: and (3) putting the hexagonal section blank rolled in the second step into an acid-base pool to finish acid-base washing to remove impurities such as oxide scale, oil stain and the like, and then performing cold rolling and shaping in the third step.
6. The method of rolling hexagonal section titanium and titanium alloy sections according to claim 5, characterized in that: and (3) performing third cold rolling and shaping after repairing the surface of the hexagonal section blank from which impurities such as oxide skin, oil stain and the like are removed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161630.2A CN111360080B (en) | 2020-03-10 | 2020-03-10 | Pass system for rolling hexagonal section titanium and titanium alloy section bar and rolling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010161630.2A CN111360080B (en) | 2020-03-10 | 2020-03-10 | Pass system for rolling hexagonal section titanium and titanium alloy section bar and rolling method |
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| Publication Number | Publication Date |
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| CN111360080A true CN111360080A (en) | 2020-07-03 |
| CN111360080B CN111360080B (en) | 2024-10-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171603A (en) * | 1993-12-20 | 1995-07-11 | Shinhoukoku Seitetsu Kk | Manufacture of hexagonal pure titanium bar |
| CN1791688A (en) * | 2003-05-20 | 2006-06-21 | 独立行政法人物质·材料研究机构 | Warm rolling method |
| CN108817094A (en) * | 2018-06-14 | 2018-11-16 | 宝鸡市天罡钛业有限责任公司 | A kind of pass structure rolling rectangular section titanium or titanium alloy profile leader pass |
| CN108817085A (en) * | 2018-06-14 | 2018-11-16 | 宝鸡市天罡钛业有限责任公司 | A kind of pass schedule and milling method rolling rectangular section titanium or titanium alloy profile |
| CN211866182U (en) * | 2020-03-10 | 2020-11-06 | 宝鸡市天罡钛业有限责任公司 | Pass system for rolling titanium and titanium alloy sectional materials with hexagonal sections |
-
2020
- 2020-03-10 CN CN202010161630.2A patent/CN111360080B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07171603A (en) * | 1993-12-20 | 1995-07-11 | Shinhoukoku Seitetsu Kk | Manufacture of hexagonal pure titanium bar |
| CN1791688A (en) * | 2003-05-20 | 2006-06-21 | 独立行政法人物质·材料研究机构 | Warm rolling method |
| CN108817094A (en) * | 2018-06-14 | 2018-11-16 | 宝鸡市天罡钛业有限责任公司 | A kind of pass structure rolling rectangular section titanium or titanium alloy profile leader pass |
| CN108817085A (en) * | 2018-06-14 | 2018-11-16 | 宝鸡市天罡钛业有限责任公司 | A kind of pass schedule and milling method rolling rectangular section titanium or titanium alloy profile |
| CN211866182U (en) * | 2020-03-10 | 2020-11-06 | 宝鸡市天罡钛业有限责任公司 | Pass system for rolling titanium and titanium alloy sectional materials with hexagonal sections |
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| CN111360080B (en) | 2024-10-15 |
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