CN201253641Y - Hot rolled seamless steel tube manufacturing system - Google Patents
Hot rolled seamless steel tube manufacturing system Download PDFInfo
- Publication number
- CN201253641Y CN201253641Y CNU2008201329618U CN200820132961U CN201253641Y CN 201253641 Y CN201253641 Y CN 201253641Y CN U2008201329618 U CNU2008201329618 U CN U2008201329618U CN 200820132961 U CN200820132961 U CN 200820132961U CN 201253641 Y CN201253641 Y CN 201253641Y
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- mill
- pipe
- seamless steel
- furnace
- hot rolled
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000003303 reheating Methods 0.000 claims abstract description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 238000009785 tube rolling Methods 0.000 claims description 10
- 238000004513 sizing Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005098 hot rolling Methods 0.000 abstract 3
- 238000005553 drilling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The utility model discloses a manufacture system of a hot rolling seamless steel pipe, which is used for solving the problems of large investment and low utilization ration of a fixing sinking mill in the production technology of the existing hot rolling seamless steel pipe. The manufacture system comprises a heating stove, a perforating machines, pipe rolling machines, a reheating furnace and a fixing sinking mill, wherein the perforating machines and the pipe rolling machines are arranged between the heating stove and the reheating stove; the fixing sinking mill is arranged on the back of the reheating stove; and the perforating machines and the pipe rolling machines are arranged in the form of two perforating machines, two pipe rolling machines or two sets of perforating machines and pipe rolling machines. The utility model is suitable for manufacturing hot rolling seamless steel pipes.
Description
Technical field
The utility model relates to a kind of hot rolled seamless steel tube manufacturing system, belongs to metal rolled technical field.
Background technology
Existing hot rolled seamless steel tube production process is solid pipe (or steel ingot) is bored a hole and to be rolled into the steel pipe of reservation shape, size and performance; Whole process mainly contains three distortion operations: (1) perforation-solid pipe (steel ingot) pierced billet is become hollow hollow forging; (2) tube rolling-with the wall thickness of hollow forging rolls into preliminary dimension or near the hollow billet of preliminary dimension; (3) decide the tube reducing-external diameter of hollow billet the is rolled into hot production tube of preliminary dimension.
The tube reducing operation of deciding in the hot rolled seamless steel tube production system is finally to determine the rolling deformation operation of outer diameter of steel pipes, when arts demand, can be equipped with the above reducing mill (12 to call mini-stretch reducing mill in the following text) of 8 frames, the stretch reducing technology of 28 frames can realize that (maximum total reducing rate is to decide one of most important technical parameter of tube reducing operation for 90% maximum total reducing rate, generally represent with Greek alphabet ε, if maximum outer diameter of steel pipes is D before the tube reducing, minimum outer diameter of steel pipes is d behind the tube reducing, then: ε=(D-d)/D * 100%), the single chassis reducing rate of its three-roller type frame can reach about 4%.Therefore, during the reducing mill of this operation more than configuration three-roller type 8 frames, can in the steel pipe sizing, realize the rolling of sizing reduction greatly.
Deciding the tube reducing operation and need dispose a large amount of standby frames in the hot rolled seamless steel tube production system forming the pass schedule of different standby series, thereby satisfies the hollow billet distortion of rolling back different size, and final production goes out the finished product seamless steel pipe of different size group distance; When the roll stand of size-reducing mill more for a long time, then need more standby frame.Therefore, generally speaking, size-reducing mill and standby frame are the maximum operations of investment in the whole piece seamless steel tube production system.
Generally, when by perforation, the tube rolling of aforementioned definitions, when deciding that any one equipment is formed a production line in three operations of tube reducing, because size-reducing mill does not have rolling off time and mill speed is adjustable, its production capacity has affluence amount over half usually.
Therefore, the maximum single processing apparatus of investment in the hot rolled seamless steel tube production system, i.e. size-reducing mill, actual production usefulness can only have been given play to the effect less than its half capacity of equipment.
The utility model content
The purpose of this utility model provides the high hot rolled seamless steel tube manufacturing system of a kind of production capacity.
For achieving the above object, the utility model adopts following technical scheme:
The hot rolled seamless steel tube manufacturing system that the utility model provides comprises heating furnace, punch and pipe mill, reheating furnace and size-reducing mill; Described punch and pipe mill are arranged between heating furnace and the reheating furnace, and described size-reducing mill is arranged in after the reheating furnace; Described punch and pipe mill are arranged with two punches, two pipe mills or two cover punches and pipe mill mode.
Wherein, the heating-up temperature scope of described heating furnace is 1100～1280 ℃.
Further, described heating furnace is Sloping Hearth Heating Furnace, rotary heating furnace, walking beam furnace, dovetail type heating furnace or induction heating furnace.
Described punch is that graceful formula punch, cone-type piercer machine, Di are given up youngster's punch, pushing piercing machine or press piercing mill.
Described pipe mill is automatic tube rolling mill, two-roller skew-rolling pipe machine, roller trio skew rolling pipe machine or push-bench.
The heating-up temperature scope of described reheating furnace is 835～1280 ℃, and reheating furnace is Sloping Hearth reheating furnace, step-by-step movement reheating furnace, tunnel type reheating furnace or induction reheating furnace.
Described size-reducing mill is sizing mill, common reducing mill, mini-stretch reducing mill or stretch-reducing mill.
The hot rolled seamless steel tube manufacturing system that the utility model provides, by having a punch in the hot rolled seamless steel tube production system now, a pipe mill or a cover perforation and pipe mill mate with a reducing sizing mill, change into two punches, two pipe mills or two cover perforation and pipe mill and a reducing sizing mill are complementary, make by perforation, two production lines that tube rolling or perforation tube rolling operation are formed provide hollow billet for a size-reducing mill, thereby make size-reducing mill in whole production system, bring into play capacity of equipment fully, on the one hand, the production efficiency of whole hot rolled seamless steel tube production system is improved nearly one times, on the other hand, given full play to the capacity of equipment of size-reducing mill, improve the rate of return on investment of size-reducing mill, also improved the rate of return on investment of whole hot rolled seamless steel tube production system.
Description of drawings
Fig. 1 is the structural representation of the utility model hot rolled seamless steel tube manufacturing system;
Fig. 2 is the schematic diagram of the embodiment 1 of the utility model hot rolled seamless steel tube manufacturing system;
Fig. 3 is the schematic diagram of the embodiment 2 of the utility model hot rolled seamless steel tube manufacturing system;
Fig. 4 is the schematic diagram of the embodiment 3 of the utility model hot rolled seamless steel tube manufacturing system.
The specific embodiment
In order to make those skilled in the art person understand the utility model scheme better, and above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the hot rolled seamless steel tube manufacturing system that the utility model provides comprises:
Heating furnace 101 is used to heat pipe;
Described heating furnace can be selected Sloping Hearth Heating Furnace, rotary heating furnace, walking beam furnace, dovetail type heating furnace or induction heating furnace for use, and the heating-up temperature scope is 1100～1280 ℃.
Punch and pipe mill 102 are provided with two punches, two pipe mills or two cover punches and pipe mill is used for the pipe after the heating is carried out drilling/rolling;
In perforation process and tube rolling operation, two identical punches, pipe mill or the identical perforation pipe mill of two covers are set, form two production lines, improve the quantity that pipe drilling/rolling in the unit interval becomes hollow billet.
Described punch can select for use graceful formula punch, cone-type piercer machine, Di to give up youngster's punch, pushing piercing machine or press piercing mill.
Described pipe mill is automatic tube rolling mill, two-roller skew-rolling pipe machine, roller trio skew rolling pipe machine or push-bench.
Reheating furnace 103 is used for concentrating the hollow billet heat again behind the drilling/rolling;
Hollow billet behind the drilling/rolling is concentrated in the reheating furnace heats, the heating-up temperature scope is 835～1280 ℃.
Described reheating furnace can be selected Sloping Hearth reheating furnace, step-by-step movement reheating furnace, tunnel type reheating furnace or induction reheating furnace for use.
Size-reducing mill 104 is used for the hollow billet after heating is again carried out deciding reducing and rolling, forms hot fished pipe.
Described rolling, be that the total reducing rate by design carries out in the reducing pass system in definite deciding, and the reducing pass system that decides that determines requires to design according to production specification scope, production capacity, and the parameter of the equipment rack quantity in this processing step, inlet mill speed, frame and equipment is determined according to pass schedule.
Described size-reducing mill comprises sizing mill, common reducing mill, mini-stretch reducing mill and stretch-reducing mill.
The hot rolled seamless steel tube manufacturing system that the utility model provides, by having a punch in the hot rolled seamless steel tube production system now, a pipe mill or a cover perforation and pipe mill mate with a reducing sizing mill, change into two punches, two pipe mills or two cover perforation and pipe mill and a reducing sizing mill are complementary, make by perforation, two production lines that tube rolling or perforation tube rolling operation are formed provide hollow billet for a size-reducing mill, thereby make size-reducing mill in whole production system, bring into play complete capacity of equipment, on the one hand, the production efficiency of whole hot rolled seamless steel tube production system is improved nearly one times, on the other hand, given full play to the capacity of equipment of size-reducing mill, improve the rate of return on investment of size-reducing mill, also improved the rate of return on investment of whole hot rolled seamless steel tube production system.
As shown in Figure 2, the embodiment 1 of the hot rolled seamless steel tube manufacturing system that the utility model provides comprises:
Heating furnace 201 heats pipe in heating furnace;
Hollow billet after size-reducing mill 203 will be bored a hole is rolled in size-reducing mill, forms hot fished pipe;
In the present embodiment, the pipe after the heating is without pipe mill, reheating furnace, and technological process is heating of pipe blank-perforation-Ding tube reducing.
As shown in Figure 3, the embodiment 2 of the hot rolled seamless steel tube manufacturing system that the utility model provides comprises:
Heating furnace 301 heats pipe in heating furnace;
Reheating furnace 303 heats the hollow billet behind the drilling/rolling in reheating furnace again;
Hollow billet after size-reducing mill 304 will be bored a hole is rolled in size-reducing mill, forms hot fished pipe;
In the present embodiment, the pipe after the heating is without pipe mill, and technological process is heating of pipe blank-perforation-heat-Ding again tube reducing.
As shown in Figure 4, the embodiment 3 of the hot rolled seamless steel tube manufacturing system that the utility model provides comprises:
Heating furnace 401 heats pipe in heating furnace;
Punch and pipe mill 402 are provided with two punches, two pipe mills or two cover punches and the pipe mill pipe after to heating and are rolled;
Size-reducing mill 403 will be bored a hole, the hollow billet behind the tube rolling is concentrated in the size-reducing mill and is rolled, and form hot fished pipe;
In the present embodiment, the pipe after the heating is without reheating furnace, and technological process is heating of pipe blank-perforation-tube rolling-Ding tube reducing.
The above; it only is the specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (7)
1, a kind of hot rolled seamless steel tube manufacturing system is characterized in that, comprises heating furnace, punch and pipe mill, reheating furnace and size-reducing mill; Described punch and pipe mill are arranged between heating furnace and the reheating furnace, and described size-reducing mill is arranged in after the reheating furnace; Described punch and pipe mill are arranged with two punches, two pipe mills or two cover punches and pipe mill mode.
2, hot rolled seamless steel tube manufacturing system according to claim 1 is characterized in that, the heating-up temperature scope of described heating furnace is 1100～1280 ℃.
3, hot rolled seamless steel tube manufacturing system according to claim 1 and 2 is characterized in that, described heating furnace is Sloping Hearth Heating Furnace, rotary heating furnace, walking beam furnace, dovetail type heating furnace or induction heating furnace.
4, hot rolled seamless steel tube manufacturing system according to claim 1 is characterized in that, described punch is that graceful formula punch, cone-type piercer machine, Di are given up youngster's punch, pushing piercing machine or press piercing mill.
5, hot rolled seamless steel tube manufacturing system according to claim 1 is characterized in that, described pipe mill is automatic tube rolling mill, two-roller skew-rolling pipe machine, roller trio skew rolling pipe machine or push-bench.
6, hot rolled seamless steel tube manufacturing system according to claim 1, it is characterized in that, the heating-up temperature scope of described reheating furnace is 835～1280 ℃, and reheating furnace is Sloping Hearth reheating furnace, step-by-step movement reheating furnace, tunnel type reheating furnace or induction reheating furnace.
7, hot rolled seamless steel tube manufacturing system according to claim 1 is characterized in that, described size-reducing mill is sizing mill, common reducing mill, mini-stretch reducing mill or stretch-reducing mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201329618U CN201253641Y (en) | 2008-07-30 | 2008-07-30 | Hot rolled seamless steel tube manufacturing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201329618U CN201253641Y (en) | 2008-07-30 | 2008-07-30 | Hot rolled seamless steel tube manufacturing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201253641Y true CN201253641Y (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201329618U Expired - Fee Related CN201253641Y (en) | 2008-07-30 | 2008-07-30 | Hot rolled seamless steel tube manufacturing system |
Country Status (1)
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| CN (1) | CN201253641Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131836A (en) * | 2013-03-25 | 2013-06-05 | 天津商业大学 | Stepping type heating furnace for heat treatment |
| CN103286157A (en) * | 2013-06-08 | 2013-09-11 | 新兴铸管股份有限公司 | Hot rolling method of metallurgical bonding wear-resistant composite tube |
| CN103464507A (en) * | 2013-07-25 | 2013-12-25 | 攀钢集团成都钢钒有限公司 | Production method for high-precision austenite seamless steel pipe |
| CN106238497A (en) * | 2015-06-09 | 2016-12-21 | Sms集团股份有限公司 | Manufacture the method for metal tube, seamless pipe apparatus operation method, push-bench, seamless pipe equipment |
| CN109648019A (en) * | 2018-11-17 | 2019-04-19 | 柳州国福科技有限公司 | A kind of automobile axis class pipe fitting efficient green rolling mill practice |
| CN114769322A (en) * | 2022-06-20 | 2022-07-22 | 太原科技大学 | Hot rolling schedule optimization method for bimetal composite seamless steel pipe |
-
2008
- 2008-07-30 CN CNU2008201329618U patent/CN201253641Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131836A (en) * | 2013-03-25 | 2013-06-05 | 天津商业大学 | Stepping type heating furnace for heat treatment |
| CN103131836B (en) * | 2013-03-25 | 2014-04-09 | 天津商业大学 | Stepping type heating furnace for heat treatment |
| CN103286157A (en) * | 2013-06-08 | 2013-09-11 | 新兴铸管股份有限公司 | Hot rolling method of metallurgical bonding wear-resistant composite tube |
| CN103286157B (en) * | 2013-06-08 | 2015-06-03 | 新兴铸管股份有限公司 | Hot rolling method of metallurgical bonding wear-resistant composite tube |
| CN103464507A (en) * | 2013-07-25 | 2013-12-25 | 攀钢集团成都钢钒有限公司 | Production method for high-precision austenite seamless steel pipe |
| CN103464507B (en) * | 2013-07-25 | 2015-11-11 | 攀钢集团成都钢钒有限公司 | A kind of method of producing high-precision austenite seamless steel pipe |
| CN106238497A (en) * | 2015-06-09 | 2016-12-21 | Sms集团股份有限公司 | Manufacture the method for metal tube, seamless pipe apparatus operation method, push-bench, seamless pipe equipment |
| CN109648019A (en) * | 2018-11-17 | 2019-04-19 | 柳州国福科技有限公司 | A kind of automobile axis class pipe fitting efficient green rolling mill practice |
| CN114769322A (en) * | 2022-06-20 | 2022-07-22 | 太原科技大学 | Hot rolling schedule optimization method for bimetal composite seamless steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20120730 |