CN104646965B - A kind of processing technique of mill memorial archway - Google Patents
A kind of processing technique of mill memorial archway Download PDFInfo
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- CN104646965B CN104646965B CN201510070753.4A CN201510070753A CN104646965B CN 104646965 B CN104646965 B CN 104646965B CN 201510070753 A CN201510070753 A CN 201510070753A CN 104646965 B CN104646965 B CN 104646965B
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- memorial archway
- plum blossom
- blossom hole
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- mill
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention belongs to technical field of steel rolling, relate to the processing and manufacturing of mill core component memorial archway, the mainly processing technique of a kind of mill memorial archway, including rough-cast, annealing, each of roughing and plum blossom hole, carrying out flaw detection, normalized treatment, each of semifinishing and plum blossom hole, Ageing Treatment, plum blossom hole polish and each shaping, super grinding, detection and anti-corrosion treatment process, final processing and manufacturing completes.In the requirement of self stable material quality, plum blossom hole dimensional accuracy and form and position tolerance in the memorial archway course of processing is ensured to be considered in by the present invention, establish one to improve and the machining process route of the effective 20 large-scale memorial archways of roller, provide favourable reference for manufacturing mill core component memorial archway.
Description
Technical field
The invention belongs to technical field of steel rolling, relate to the processing and manufacturing of mill core component memorial archway, the processing technique of a kind of mill memorial archway.
Background technology
Mill is as rustless steel, silicon steel and high-alloy steel strip and the main production equipments of ultra-thin band at present, has popularized the whole world.
Domestic also have tens of set mill to produce for rustless steel, silicon steel, but equipment great majority rely on external import, and it is extremely low that pure production domesticization mill occupies domestic market ratio, and its main cause is the manufacture processing of mill core component memorial archway.
In wide cut mill, memorial archway plum blossom hole, because of the dimensional accuracy of its superelevation and Geometrical Tolerance Principle, constrains the manufacturing of domestic Sendzimir mill group significantly.
The most domestic machining manufacture proposing some mill memorial archways, but merely relate to the means that processing and manufacturing is taked, the not overall perfect processing process of 20 roller memorial archways, thus the most fundamentally solve the difficulties run into during the processing and manufacturing of 20 roller memorial archways.
Summary of the invention
For the shortcoming overcoming above-mentioned prior art, it is an object of the invention to provide the processing technique of a kind of mill memorial archway, guarantee that mill memorial archway accounts for from each process detail in the course of processing, the most perfect processing technique of 20 roller memorial archways, it is provided that the favourable reference of the manufacturing.
To achieve these goals, the technical scheme that the present invention takes is:
The processing technique of a kind of mill memorial archway, comprises the steps:
Step one, rough-cast: using the mode of integral cast to cast memorial archway blank, staying allowance after having cast is 25～30mm；
Step 2, annealing: foundry goods is warming up to 600～630 DEG C, is incubated 5～6 hours, Slow cooling in stove；
Step 3, each of roughing and plum blossom hole: after memorial archway has cast, plum blossom hole and each surface are carried out roughing, removes rough surface, roughing amount is 15～20mm, and roughing is reserved 10～15mm processing capacities after completing, and surface roughness is 12.5～3.2；
Step 4, carrying out flaw detection: after 20 roller memorial archways have cast, it is carried out carrying out flaw detection, observes the defect whether having shrinkage cavity, segregation inside memorial archway；
Step 5, normalized treatment: foundry goods is carried out a normalized treatment, foundry goods is warming up to 830～860 DEG C, after being incubated 3～4 hours, foundry goods is removed heating furnace and passes through quenching；
Step 6, each of semifinishing and plum blossom hole: after normalized treatment completes, memorial archway plum blossom hole and each surface are carried out semifinishing, semifinishing processing capacity is 7～10mm, and the pre-allowance of semifinishing post-treatment is 3～5mm, and surface roughness is 0.4～1.6；
Step 7, Ageing Treatment: foundry goods is warming up to 300～350 DEG C, it is incubated 15～20 hours, then natural cooling in stove；
Step 8, plum blossom hole polish and each shaping: after Ageing Treatment, arrange polish according to the pre-allowance of semifinishing, and processing capacity is 3～5mm, and surface roughness is 0.05～0.2；
Step 9, super grinding, detection: plum blossom hole surface is carried out super grinding, make surface roughness reach to design requirement；After super grinding completes, the plum blossom hole depth of parallelism, linearity, plum blossom hole size are detected and record；
Step 10, antirust treatment: after 20 roller memorial archway manufactures complete, surface each to plum blossom hole and memorial archway carries out antirust treatment.
Described step 9 concrete grammar is, plum blossom hole surface carries out super grinding, removes salient point, make surface roughness reach to design requirement, after super grinding completes, the plum blossom hole depth of parallelism, linearity, plum blossom hole size are detected and record, as testing result reaches to design requirement, then complete processing and manufacturing；Such as also error, then continue super grinding and repair, be finally reached design requirement.
The described antirust treatment in step 10 is: after 20 roller memorial archway manufactures complete, and memorial archway surface clean is clean, surface smear antirust oil each to plum blossom hole and memorial archway.
Rough machined technique in described step 3 includes hinge rough turn, thick and corase grind.
Semi-finished technique in described step 6 includes finish turning, refines and finish ream.
The technique of the described polish in step 8 includes grinding, honing and polishing.
Beneficial effects of the present invention: the processing technique of this mill memorial archway of the present invention, it is casted into each process section of roughing, semifinishing and polish from beginning memorial archway and all adds the means such as heat treatment, carrying out flaw detection, in ensureing to be considered in the requirement of self stable material quality, plum blossom hole dimensional accuracy and form and position tolerance in the memorial archway course of processing, establish one to improve and the machining process route of the effective 20 large-scale memorial archways of roller, provide favourable reference for manufacturing mill core component memorial archway.
Detailed description of the invention
It is an object of the invention to provide the processing technique of a kind of large-scale mill memorial archway, it is ensured that 20 roller memorial archways account for from each process detail in the course of processing, finally improve the processing technique of 20 roller memorial archways, it is provided that the favourable reference of the manufacturing.
To achieve these goals, the present invention proposes the processing technique of a kind of mill memorial archway, comprises the steps:
Step one, rough-cast: using the mode of integral cast to cast memorial archway blank, staying allowance after having cast is 25～30mm；
As a example by 1450mm mill, weight about 70 tons, it is generally of thick and large section and high-head as large-scale steel-casting, high plus heat effect temperature between casting solidification process medium casting/casting mold, the persistent period is long, easily cause that casting dimension poor stability, cast-internal inhomogeneous cooling be even, shrinkage cavity, be mingled with, the defect such as surface scab, for 20 roller entirety memorial archways, first rising head is arranged on plum blossom hole center, cast gate is arranged on lower periphery, and suitable adds guiding gutter, then can avoid above defect.
Step 2, annealing: foundry goods is warming up to 600～630 DEG C, is incubated 5～6 hours, Slow cooling in stove；
After 20 roller memorial archways pour, the biggest difference is there is in rate of cooling such as different parts, appearance and cores, core also has stronger inhibition to the contraction in foundry goods cooling procedure, therefore, inevitably produces bigger casting stress at cast-internal after cooling down completely.Further, since 20 roller memorial archway casting section areas are big, during solidification, speed is relatively slow, and usual as-cast structure is thicker column crystal, has had a strong impact on its mechanical property, it is therefore desirable to through suitable heat treatment step.The purpose of the annealing in this stage shows as two aspects, and one is to eliminate or reduce casting stress, and two is to improve tissue to obtain satisfied mechanical property (such as intensity, hardness, impact property etc.).
Step 3, each of roughing and plum blossom hole: after memorial archway has cast, plum blossom hole and each surface are carried out roughing, removing rough surface, roughing amount is 15～20mm, and roughing is reserved 10～15mm processing capacities after completing, rough machined technique includes hinge rough turn, thick and corase grind, roughly grind after plum blossom hole is slightly cut with scissors, each face is carried out rough turn after roughly grind, it is ensured that surface roughness is 12.5～3.2；
Rough machined purpose is: one after to the roughing of each surface, observes whether surface has shrinkage cavity, the defect such as is mingled with；Two is to set up preliminary datum level, needs reserved corresponding allowance according to polish, prepares for follow-up semifinishing.
Step 4, carrying out flaw detection: after 20 roller memorial archways have cast, it is carried out carrying out flaw detection, observe and whether have the defect such as shrinkage cavity, segregation inside memorial archway, especially some critical positions such as plum blossom hole, 8 edges and corners of memorial archway need careful carrying out flaw detection, must not have any defect, it is to avoid affect subsequent fine processing.
Step 5, normalized treatment: foundry goods is carried out a normalized treatment, foundry goods is warming up to 830～860 DEG C, after being incubated 3～4 hours, foundry goods is removed heating furnace and passes through quenching；
The purpose of this procedure is in addition to eliminate further or reduce outside casting stress, the cutting stress produced when simultaneously eliminating roughing.
Step 6, each of semifinishing and plum blossom hole: because 20 roller memorial archway dimension precision requirement are high, the particularly dimensional accuracy at plum blossom hole position and Geometrical Tolerance Principle, polish need to be divided into semifinishing and two stages of polish implement, first carry out the first stage, the i.e. semifinishing stage, after normalized treatment completes, memorial archway plum blossom hole and each surface are carried out semifinishing, semifinishing processing capacity is 7～10mm, the pre-allowance of semifinishing post-treatment is 3～5mm, refine after plum blossom hole is finish reamed, refine after each face is carried out finish turning, ensure that surface roughness is 0.4～1.6.
Step 7, Ageing Treatment: foundry goods is warming up to 300～350 DEG C, it is incubated 15～20 hours, then natural cooling in stove；
The cutting stress that the purpose that this stepped aging processes produces when being to remove semifinishing, and make memorial archway self performance state reach eventual stabilities.
Step 8, plum blossom hole polish and each shaping: after Ageing Treatment, polish is arranged according to the pre-allowance of semifinishing, processing capacity is 3～5mm, the technique of polish includes grinding, honing and polishing, is first ground plum blossom hole and each face and honing processes so that surface roughness reaches 0.1～0.4, it is processed by shot blasting again so that final surface roughness is 0.01～0.2.
After Ageing Treatment, arranging polish according to the pre-allowance of semifinishing, this process is the second stage of overall polish, it is ensured that after polish completes, plum blossom hole reaches to design requirement, then processes each surface of memorial archway on the basis of plum blossom hole, finally shapes.
Step 9, super grinding, detection: consider abrasion and the impact of cutting amount of deflection of memorial archway course of processing cutter, and the requirement of plum blossom hole surface roughness, need plum blossom hole surface is carried out super grinding, making surface roughness reach to design requirement, roughness reaches in the range of error that final design is allowed；After super grinding completes, the plum blossom hole depth of parallelism, linearity, plum blossom hole size are detected and record；
Above-mentioned steps nine concrete grammar is, plum blossom hole surface carries out super grinding, removes salient point, make surface roughness reach to design requirement, after super grinding completes, the plum blossom hole depth of parallelism, linearity, plum blossom hole size are detected and record, as testing result reaches to design requirement, then complete processing and manufacturing；Such as also error, then continue super grinding and repair, be finally reached design requirement.
Step 10, antirust treatment: after 20 roller memorial archway manufactures complete, surface each to plum blossom hole and memorial archway carries out antirust treatment.
Antirust treatment in above-mentioned steps ten is: after 20 roller memorial archway manufactures complete, and memorial archway surface clean is clean, surface smear antirust oil each to plum blossom hole and memorial archway.
In sum, the present invention establishes one and improves and the processing technique of the effective 20 large-scale memorial archways of roller, it is casted into each process section of roughing, semifinishing and polish from beginning memorial archway and all adds the means such as heat treatment, carrying out flaw detection, in ensureing to be considered in the requirement of self stable material quality, plum blossom hole dimensional accuracy and form and position tolerance in the memorial archway course of processing, provide favourable reference for manufacturing mill core component memorial archway.
Exemplified as above is only the illustration to the present invention, is not intended that the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention belongs to protection scope of the present invention.
Claims (6)
1. the processing technique of a mill memorial archway, it is characterised in that comprise the steps:
Step one, rough-cast: using the mode of integral cast to cast memorial archway blank, staying allowance after having cast is 25～30mm；
Step 2, annealing: foundry goods is warming up to 600～630 DEG C, is incubated 5～6 hours, Slow cooling in stove；
Step 3, each of roughing and plum blossom hole: after memorial archway has cast, plum blossom hole and each surface are carried out roughing, removes rough surface, roughing amount is 15～20mm, and roughing is reserved 10～15mm processing capacities after completing, and surface roughness is 12.5～3.2；
Step 4, carrying out flaw detection: after 20 roller memorial archways have cast, it is carried out carrying out flaw detection, observes the defect whether having shrinkage cavity, segregation inside memorial archway；
Step 5, normalized treatment: foundry goods is carried out a normalized treatment, foundry goods is warming up to 830～860 DEG C, after being incubated 3～4 hours, foundry goods is removed heating furnace and passes through quenching；
Step 6, each of semifinishing and plum blossom hole: after normalized treatment completes, memorial archway plum blossom hole and each surface are carried out semifinishing, semifinishing processing capacity is 7～10mm, and the pre-allowance of semifinishing post-treatment is 3～5mm, and surface roughness is 0.4～1.6；
Step 7, Ageing Treatment: foundry goods is warming up to 300～350 DEG C, it is incubated 15～20 hours, then natural cooling in stove；
Step 8, plum blossom hole polish and each shaping: after Ageing Treatment, arrange polish according to the pre-allowance of semifinishing, and processing capacity is 3～5mm, and surface roughness is 0.05～0.2；
Step 9, super grinding, detection: plum blossom hole surface is carried out super grinding, make surface roughness reach to design requirement；After super grinding completes, the plum blossom hole depth of parallelism, linearity, plum blossom hole size are detected and record；
Step 10, antirust treatment: after 20 roller memorial archway manufactures complete, surface each to plum blossom hole and memorial archway carries out antirust treatment.
2. the processing technique of mill memorial archway as claimed in claim 1, it is characterized in that: described step 9 concrete grammar is, plum blossom hole surface is carried out super grinding, remove salient point, make surface roughness reach to design requirement, after super grinding completes, the plum blossom hole depth of parallelism, linearity, plum blossom hole size are detected and record, as testing result reaches to design requirement, then complete processing and manufacturing；Such as also error, then continue super grinding and repair, be finally reached design requirement.
3. the processing technique of mill memorial archway as claimed in claim 1, it is characterised in that the described antirust treatment in step 10 is: after 20 roller memorial archway manufactures complete, and memorial archway surface clean is clean, surface smear antirust oil each to plum blossom hole and memorial archway.
4. the processing technique of mill memorial archway as claimed in claim 1, it is characterised in that: the rough machined technique in described step 3 includes hinge rough turn, thick and corase grind.
5. the processing technique of mill memorial archway as claimed in claim 1, it is characterised in that: the semi-finished technique in described step 6 includes finish turning, refines and finish ream.
6. the processing technique of mill memorial archway as claimed in claim 1, it is characterised in that: the technique of the described polish in step 8 includes grinding, honing and polishing.
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| CN201510070753.4A CN104646965B (en) | 2015-02-11 | 2015-02-11 | A kind of processing technique of mill memorial archway |
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| CN201510070753.4A CN104646965B (en) | 2015-02-11 | 2015-02-11 | A kind of processing technique of mill memorial archway |
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| CN104646965B true CN104646965B (en) | 2016-08-24 |
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| CN111546005B (en) * | 2020-05-12 | 2021-07-06 | 常州宝菱重工机械有限公司 | Method for processing plum blossom holes of housing of multi-roll mill at normal temperature |
| CN113414356B (en) * | 2021-05-26 | 2023-01-31 | 江苏优泽科技有限公司 | Isometric crystal forming control process for manufacturing furnace inner roller |
| CN114515817B (en) * | 2022-01-28 | 2023-11-10 | 洛阳中重铸锻有限责任公司 | Casting method of large plum blossom hole frame |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3574638B2 (en) * | 2001-11-05 | 2004-10-06 | 新日本製鐵株式会社 | Temper rolling mill and temper rolling method for preventing warp and uneven gloss of steel strip |
| CN1872439A (en) * | 2006-05-24 | 2006-12-06 | 曹全有 | New type 20 roller mill |
| CN103008989A (en) * | 2012-12-07 | 2013-04-03 | 中冶陕压重工设备有限公司 | Method for processing plum-shaped through hole of big housing of sendzimir multi-roll mill |
| CN103223570A (en) * | 2013-03-25 | 2013-07-31 | 上海山弈冶金技术有限公司 | Processing method of mill housing |
-
2015
- 2015-02-11 CN CN201510070753.4A patent/CN104646965B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3574638B2 (en) * | 2001-11-05 | 2004-10-06 | 新日本製鐵株式会社 | Temper rolling mill and temper rolling method for preventing warp and uneven gloss of steel strip |
| CN1872439A (en) * | 2006-05-24 | 2006-12-06 | 曹全有 | New type 20 roller mill |
| CN103008989A (en) * | 2012-12-07 | 2013-04-03 | 中冶陕压重工设备有限公司 | Method for processing plum-shaped through hole of big housing of sendzimir multi-roll mill |
| CN103223570A (en) * | 2013-03-25 | 2013-07-31 | 上海山弈冶金技术有限公司 | Processing method of mill housing |
Non-Patent Citations (3)
| Title |
|---|
| 《一种大型闭式整体轧机牌坊的加工工艺研究》;陶慧敏等;《中原工学院学报》;20120630;第23卷(第3期);第71-75页 * |
| 《四辊轧机牌坊的数控加工方案优化设计》;杨顺田;《机械与电子》;20111231(第6期);第70-73页 * |
| 肖学萍.《大型铝板轧机牌坊加工方法探讨》.《有色设备》.2010,(第3期), * |
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