CN110480264B - Slotted cold and hot roller processing technology - Google Patents
Slotted cold and hot roller processing technology Download PDFInfo
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- CN110480264B CN110480264B CN201910760171.7A CN201910760171A CN110480264B CN 110480264 B CN110480264 B CN 110480264B CN 201910760171 A CN201910760171 A CN 201910760171A CN 110480264 B CN110480264 B CN 110480264B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention discloses a processing technology of a slotted cold and hot roller, which comprises the steps of rough turning forming, rough blank heat treatment, finish turning forming, circulation channel forming, slotted forming, roller body assembling and hot grinding forming. The invention carries out three-stage turning, grinding and forming, reasonably controls the reserved quantity and meets the high-precision forming requirement of the cold hot roller. The final hot grinding molding is the operation temperature grinding, the matching is accurate and stable, the physical state of the roller body processing and the later-stage production processing is consistent, and the qualification rate of the cold and hot roller is improved. The process has reasonable design of process steps, improves the production efficiency and the yield and reduces the production cost.
Description
Technical Field
The invention relates to a processing technology of a slotted cold and hot roller, belonging to the technical field of roller processing.
Background
The main working parts and tools on the rolling mill produce continuous plastic deformation of the metal. The roller mainly comprises a roller body, a roller neck and a shaft head. The roll body is the middle part of the roll that actually participates in rolling metal. It has a smooth cylindrical or grooved surface. The roll neck is mounted in bearings and transmits the rolling force to the stand through a bearing block and a screw down device. The driving end shaft head is connected with the gear seat through a connecting shaft, and the rotating torque of the motor is transmitted to the roller. The rolls may be arranged in two, three, four or more rolls in the mill stand.
In the prior art, there is a cold and hot roller, i.e. a hot circulation path and a cold circulation path are provided therein, the hot circulation path is fed with hot oil, and the cold circulation path is fed with cold water, so that the cold and hot roller is maintained in a relatively stable temperature range for processing operation.
The cold and hot roller is assembled and formed with the flange body after being subjected to heat treatment, rough trimming, fine trimming and pore channel forming, and the cold and hot roller can deform to a certain extent in the cold and hot medium supply process, so that the machining precision is influenced.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a processing technology of a slotted cold-hot roller, aiming at the problem that the precision is affected by the deformation of the traditional cold-hot roller easily generated in a specific operation temperature environment after the traditional cold-hot roller is formed.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the processing technology of the slotted cold and hot roller comprises the following steps:
s1, roughly turning and forming the blank,
turning a bar into a rough blank, wherein the rough blank comprises a roller main body and shaft levers positioned on two sides of the roller main body, and the roller main body and the shaft levers respectively have a first reserved diameter which is +3 mm- +4mm of the finished product diameter;
s2 heat treatment of the rough blank,
the hardness of the rough blank is modulated through heat treatment;
s3, finish-turning and forming,
turning the modulated rough blank into a fine blank, turning the shaft lever into a bearing matching section and a shaft matching section, and simultaneously turning the roller main body, wherein the roller main body, the bearing matching section and the shaft matching section respectively have a second reserved diameter which is +1.5 mm- +2.5mm of the finished product diameter;
the S4 circulation path is formed,
molding the refined blank in a cold circulation way and a hot circulation way to form a semi-shafting blank;
s5, the forming of the slit is carried out,
axially slotting on the semi-shafting blank;
s6, assembling the roller body,
assembling sealing flange plates at two ends of the slotted semi-finished shaft blank to form a semi-finished product;
s7, hot-grinding and forming,
and supplying medium to the cold circulation channel and the hot circulation channel of the semi-finished product to enable the semi-finished product to reach the required operation temperature, and eliminating the second reserved diameter in the operation temperature state.
Preferably, in step S2, the raw blank is processed into HB 220-260.
Preferably, in step S5, the slit is located at a roll surface gap of the roll body of 0.35mm to 0.45 mm.
The invention has the following beneficial effects:
1. through tertiary turning coping shaping to reasonable control reserves, satisfy the high accuracy shaping demand of cold-hot roller.
2. The final hot grinding molding is the operation temperature grinding, the matching is accurate and stable, the physical state of the roller body processing and the later-stage production processing is consistent, and the qualification rate of the cold and hot roller is improved.
3. The process has reasonable design of process steps, improves the production efficiency and the yield and reduces the production cost.
Drawings
Fig. 1 is a schematic flow chart of the processing technology of the slotted cold and hot roller of the invention.
FIG. 2 is a schematic view of the forming process of the cold-hot roll in the processing technology of the slotted cold-hot roll.
Detailed Description
The invention provides a processing technology of a slotted cold and hot roller. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
The processing technology of the slotted cold and hot roller, as shown in fig. 1 and fig. 2, comprises the following steps:
s1, roughly turning and forming the blank,
turning the bar into a rough blank, wherein the rough blank comprises a roller main body and shaft levers positioned on two sides of the roller main body, and the roller main body and the shaft levers respectively have a first reserved diameter which is +3 mm- +4mm of the finished product diameter.
Specifically, the bar is generally made of medium carbon steel, the hardness of the bar is low before heat treatment, and the rough forming is performed at the moment, so that the abrasion of a cutter is low, and rough blank forming is easy.
S2 heat treatment of the rough blank,
the hardness of the green compact was adjusted by heat treatment.
The hardness of the crude embryo was adjusted to HB 220-260. This is the general desired hardness range.
The whole medium carbon steel can deform to a certain extent in the heat treatment process, and the deformation requirement can be completely met through the first reserved diameter, so that the coarse blank after heat treatment meets the fine grinding requirement of the finished product forming specification.
S3, finish-turning and forming,
turning the modulated rough blank into a fine blank, turning the shaft lever into a bearing matching section and a shaft matching section, and simultaneously turning the roller main body, wherein the roller main body, the bearing matching section and the shaft matching section respectively have a second reserved diameter which is +1.5 mm- +2.5mm of the finished product diameter.
After heat treatment, the rough blank can generate certain deformation, the fine blank is prepared through fine turning, the surface of the fine blank is smooth, and the adjustment cutting amount of the working temperature is reserved.
The S4 circulation path is formed,
and (4) performing cold circulation and hot circulation molding on the fine blank to form a semi-shafting blank.
S5, the forming of the slit is carried out,
and axially slotting on the semi-shafting blank. The gap between the roller surfaces of the slotting positioned on the roller main body is 0.35 mm-0.45 mm.
S6, assembling the roller body,
and assembling sealing flange plates at two ends of the slotted semi-finished shaft blank to form a semi-finished product.
And (3) the precision of the shape of the precision blank after the precision turning meets the requirement, and at the moment, the circulation pipeline and the slotting forming of the steps from S4 to S6 are carried out, namely the flange is matched and connected, and the flange is used for sealing to prevent cold and hot media from leaking.
S7, hot-grinding and forming,
and supplying medium to the cold circulation channel and the hot circulation channel of the semi-finished product to enable the semi-finished product to reach the required operation temperature, and eliminating the second reserved diameter in the operation temperature state.
The second reserved diameter is reserved in the precision blank, so that the expansion and contraction quantity can be eliminated by the second reserved diameter when the specific required operation temperature is maintained, and the forming precision of the cold and hot roller is greatly improved by maintaining the operation temperature for grinding.
Through the above description, the slotted cold and hot roller processing technology disclosed by the invention can meet the high-precision forming requirement of the cold and hot roller by three-level turning, grinding and forming and reasonably controlling the reserved quantity. The final hot grinding molding is the operation temperature grinding, the matching is accurate and stable, the physical state of the roller body processing and the later-stage production processing is consistent, and the qualification rate of the cold and hot roller is improved. The process has reasonable design of process steps, improves the production efficiency and the yield and reduces the production cost.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (3)
1. The processing technology of the slotted cold and hot roller is characterized by comprising the following steps:
s1, roughly turning and forming the blank,
turning a bar into a rough blank, wherein the rough blank comprises a roller main body and shaft levers positioned on two sides of the roller main body, and the roller main body and the shaft levers respectively have a first reserved diameter which is +3 mm- +4mm of the finished product diameter;
s2 heat treatment of the rough blank,
adjusting the hardness of the rough blank through heat treatment;
s3, finish-turning and forming,
turning the adjusted rough blank into a fine blank, turning the shaft lever into a bearing matching section and a shaft matching section, and simultaneously turning the roller main body, wherein the roller main body, the bearing matching section and the shaft matching section respectively have a second reserved diameter which is +1.5 mm- +2.5mm of the finished product diameter;
the S4 circulation path is formed,
molding the refined blank in a cold circulation way and a hot circulation way to form a semi-shafting blank;
s5, the forming of the slit is carried out,
axially slotting on the semi-shafting blank;
s6, assembling the roller body,
assembling sealing flange plates at two ends of the slotted semi-finished shaft blank to form a semi-finished product;
s7, hot-grinding and forming,
and medium supply is carried out on the cold circulation channel and the hot circulation channel of the semi-finished product, so that the semi-finished product reaches the required operation temperature, and the reserved amount of the second reserved diameter is between +1.5mm and +2.5mm in the operation temperature state.
2. The process of claim 1, wherein the step of machining the slotted cold and hot roller comprises the following steps:
in the step S2, the hardness of the rough blank is adjusted to HB 220-260.
3. The process of claim 1, wherein the step of machining the slotted cold and hot roller comprises the following steps:
in step S5, the slit is located on the roll surface of the roll body, and the gap is 0.35mm to 0.45 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910760171.7A CN110480264B (en) | 2019-08-16 | 2019-08-16 | Slotted cold and hot roller processing technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910760171.7A CN110480264B (en) | 2019-08-16 | 2019-08-16 | Slotted cold and hot roller processing technology |
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| CN110480264A CN110480264A (en) | 2019-11-22 |
| CN110480264B true CN110480264B (en) | 2021-04-30 |
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Citations (5)
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| RU2093286C1 (en) * | 1996-07-01 | 1997-10-20 | Общество с ограниченной ответственностью "Научно-производственное предприятие "Валок" | Backup roll operation method |
| CN101513705A (en) * | 2009-03-02 | 2009-08-26 | 常州艾柯轧辊有限公司 | Cold roller production process |
| CN101722384A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled back-up roll by same |
| CN103264257A (en) * | 2013-04-15 | 2013-08-28 | 江苏华冶科技有限公司 | Machining method for deviation rectification roller |
| CN106493518A (en) * | 2016-11-02 | 2017-03-15 | 常州泉汇重工科技有限公司 | Steel alloy circle quenching roller production technology used by galvanized wire |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT999687B (en) * | 1972-11-09 | 1976-03-10 | Skf Ind Trading & Dev | GROUP OF BEARING FOR ROTATING PARTS EQUIPPED WITH BRAKE |
| US6440237B1 (en) * | 2000-05-23 | 2002-08-27 | Delphi Technologies, Inc. | Process for forming cold formed high-load bearing steel parts |
| CN102644026A (en) * | 2011-02-22 | 2012-08-22 | 宝山钢铁股份有限公司 | Cold roll and manufacturing method thereof |
| CN102788082B (en) * | 2012-07-20 | 2015-08-05 | 常州欧亚重工机械有限公司 | A kind of mirror roller |
| CN104451437B (en) * | 2015-01-08 | 2016-01-20 | 江苏宏宇模具集团有限公司 | A kind of preparation method of high-performance large-scale cold roll |
| CN105619638B (en) * | 2016-01-25 | 2018-01-26 | 青岛科技大学 | A kind of mill or rolling mill roller and its manufacture method |
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2019
- 2019-08-16 CN CN201910760171.7A patent/CN110480264B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2093286C1 (en) * | 1996-07-01 | 1997-10-20 | Общество с ограниченной ответственностью "Научно-производственное предприятие "Валок" | Backup roll operation method |
| CN101722384A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled back-up roll by same |
| CN101513705A (en) * | 2009-03-02 | 2009-08-26 | 常州艾柯轧辊有限公司 | Cold roller production process |
| CN103264257A (en) * | 2013-04-15 | 2013-08-28 | 江苏华冶科技有限公司 | Machining method for deviation rectification roller |
| CN106493518A (en) * | 2016-11-02 | 2017-03-15 | 常州泉汇重工科技有限公司 | Steel alloy circle quenching roller production technology used by galvanized wire |
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| CN110480264A (en) | 2019-11-22 |
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