CN102672437B - Processing technology for recycling hot-rolled aluminum plate mill roll - Google Patents
Processing technology for recycling hot-rolled aluminum plate mill roll Download PDFInfo
- Publication number
- CN102672437B CN102672437B CN201210180011.3A CN201210180011A CN102672437B CN 102672437 B CN102672437 B CN 102672437B CN 201210180011 A CN201210180011 A CN 201210180011A CN 102672437 B CN102672437 B CN 102672437B
- Authority
- CN
- China
- Prior art keywords
- roll
- roller shell
- mill roll
- parent
- turning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention relates to a processing technology for recycling a hot-rolled aluminum plate mill roll. The processing technology comprises the following processing steps: selecting the used hot-rolled aluminum plate mill roll as a mother mill roll; roughly processing and quenching a roll sleeve; spraying the outer circle of the roll sleeve by high-pressure water spray, cooling and quenching; spraying the inner circle of the roll sleeve by low-pressure water spray and cooling; tempering the roll sleeve after quenching the roll sleeve; turning and grinding the roll sleeve, so that the technological requirement of processing drawing is met; turning and grinding the outer circle of the mother mill roll, so that the outer circle of the mother mill roll has the size matched with that of the inner circle of the roll sleeve in a thermal mode; heating the roll sleeve, preserving the heat, taking out the roll sleeve, matching and compounding the roll sleeve with the mother mill roll to form an integrated mill roll; tempering the integrated mill roll and eliminating the internal stress; turning and grinding the integrated mill roll, so that the technological requirement of processing drawing is met; and packaging and putting the products into a storage after the products are detected to be qualified. By the processing technology, the waste mill roll can be used reasonably and repeatedly, the service life of the hot-rolled aluminum plate mill roll can be prolonged, and the production cost of enterprises can be reduced.
Description
Technical field
What the present invention relates to is a kind of processing of roll edge cover, the processing technology of specifically a kind of hot rolled aluminium roll regeneration.
Background technology:
Oneself covers social life every field aluminum products comprehensively.In the production link of aluminum products, vital operation is hot rolled aluminium.The quality of hot rolled aluminium is directly connected to the quality of the final products of aluminum products industry, and its key point is roll for hot-rolling problem.
For a long time, due to reason puzzlement Zhe Ge aluminum products enterprises such as the material losses of hot rolled aluminium roll, thereby adopt in a large number import hot rolled aluminium roll to meet need of production, what bring is high investment, expensive, poor benefit phenomenon, each aluminum products enterprise all have a large amount of oneself can not re-use, all kinds of specification rolls of the scope that takes out of service, are seriously restricting the benign development of aluminum products enterprise.
summary of the invention:
The object of the invention is to be to overcome above-mentioned weak point, a kind of processing technology of hot rolled aluminium roll recycling is provided, utilize that client provides come into operation or oneself roll through completing service life as parent, it is carried out to ultrasonic examination and detection, to obtain as parent roll, then outside parent roll, edge is joined roller shell, both are combined into one, reach useless roll rationally, Reusability, can improve the service life of hot rolled aluminium roll, reduce the production cost of enterprise, increase economic efficiency.
According to technical scheme provided by the invention, the processing technology of hot rolled aluminium roll regeneration, comprises following procedure of processing:
1. parent roll: parent roll is selected used hot rolled aluminium roll, with CTS-22A type supersonic detector, carries out ultrasonic examination detection to hot rolled aluminium roll, and parent roll does not have implosion, internal injury defect;
2. roller shell material: roller shell material 32Cr3Mo1V, forging ratio >=5; Do not allow white point, implosion, shrinkage cavity, skull patch and non-metallic inclusion to exist; Banded, desmachyme≤2.0 grade; Spheroidizing pearlitic spheroidization tissue reaches secondary standard, annealing hardness HB240; Detect with CTS-22A type supersonic detector.
3. roller shell roughing operation: rough turn by roughing drawing requirement in the technological process of production; Guarantee that wall thickness is at 60-120mm; Roller shell inside and outside circle out-of-roundness≤1mm; Roller shell inside and outside circle nonstraightness≤1mm; Roller shell inside and outside circle roughness 3.2.
4. roller shell Quenching Treatment: classification intensification heating process: roller shell is packed into while being directly warmed up to 580-620 DEG C in HT07-107 type trolley type heating furnace, insulation 1.8-2.2 hour, heated up 100 DEG C with every 1 hour again, be warmed up to 900 DEG C, insulation 1.8-2.2 hour; Spray roller shell cylindrical with 5MPa high-pressure water mist and be cooled to 200-250 DEG C; Quenching 10-15 minute to 1.5MPa low pressure water mist sprinkling for roller shell inner circle, then sends into oil quenching bath slow cooling, chilling temperature 80-120 DEG C, cooling 20-35 minute simultaneously; Guarantee roller shell outer wall hardness bed thickness 40-70mm, hardness HS65-75; Inner round wall hardness HS50-55;
5. roller shell temper: carry out temper after Quenching Treatment, eliminate stress and reach hardness requirement; Temperature 520-550 DEG C, insulation 8-12 hour;
6. roller shell half finish turning manufacturing procedure:
Roller shell reaches and in the technological process of production, processes drawing technological requirement through turning, grinding; Roller shell inside and outside circle roughness reaches more than 0.8, roller shell inside and outside circle out-of-roundness≤0.03mm, roller shell inside and outside circle nonstraightness≤0.03mm;
7. parent Roller Machining operation:
The cylindrical turning of parent roll, grinding, reach the size of joining with roller shell inner circle heat; The edge cover matching allowance of each roll forms by parent roller diameter and parent roll length computation; Edge cover matching allowance calculates: parent roller diameter unit quantity is mm, and parent roll long measure amount is M, parent roller diameter х 0.09% х parent roll length;
8. hot supporting compound working procedure:
Roller shell is contained in HT11-610 type shaft furnace and is warming up to 200-220 DEG C, insulation 1.8-2.2 hour; Take out fast and parent roll matches and is combined into roll entirety; Then by roll entirety tempering 7.8-8.2 hour under the temperature conditions of 200-220 DEG C, be cooled to 50 DEG C to come out of the stove with stove, eliminate internal stress.
9. the turning of roll entirety, grinding process:
Roll entirety reaches processing drawing technological requirement through turning, grinding; Hardness of roll body HS65-75; Roll entirety body of roll roughness 0.8; Roll entirety body of roll out-of-roundness≤0.03mm; Roll entirety body of roll nonstraightness≤0.03mm; Qualified rear packaging warehouse-in after testing.
Compared with the prior art the present invention has the following advantages:
The present invention adopts used parent roll to inlay cover roller shell outward, and both are combined into one, reach useless roll rationally, Reusability, in the service life that can improve hot rolled aluminium roll, reduce the production cost of enterprise, increase economic efficiency; Can give more than the roll cost payout of aluminum products enterprise reduce by 50 %, can give due to frequent and change more than shutdown that roll and maintenance bring treat work loss minimizing 30 %.
detailed description of the invention:
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1 product specification: ￠ 520mm*1200mm*2860mm
1. parent roll: parent roll is selected used hot rolled aluminium roll, with CTS-22A type supersonic detector, carries out ultrasonic examination detection to hot rolled aluminium roll, and parent roll does not have implosion, internal injury defect, can work out each procedure technology.
2. roller shell material: roller shell blank material 32Cr3Mo1V, forging ratio >=5; Do not allow white point, implosion, shrinkage cavity, skull patch and non-metallic inclusion to exist; Banded, desmachyme≤2.0 grade; Spheroidizing pearlitic spheroidization tissue reaches secondary standard, annealing hardness HB240; CTS-22A type supersonic detector detects.
3. rough turn by roller shell roughing drawing in the technological process of production.Guarantee outside diameter ￠ 520mm+4mm-￠ 520mm+5mm; Internal diameter ￠ 380mm-4mm-￠ 380mm-5mm; Roller shell inside and outside circle out-of-roundness≤1mm; Roller shell inside and outside circle nonstraightness≤1mm; Roller shell inside and outside circle roughness 3.2.Reach roughing drawing requirement in the technological process of production;
4. roller shell Quenching Treatment: classification intensification heating process: roller shell is contained in while being directly warmed up to 600 DEG C in HT07-107 type trolley type heating furnace, is incubated 2 hours, then heat up 100 DEG C with every 1 hour, be warming up to 900 DEG C, be incubated 2 hours; Spray roller shell cylindrical with 5MPa high-pressure water mist and be cooled to 220 DEG C, quench 10 minutes, to 1.5MPa low pressure water mist sprinkling for roller shell inner circle, then send into oil quenching bath slow cooling to 80-90 DEG C, cooling 25 minutes simultaneously.Guarantee that it is HS50-55 that 70mm wall thickness roller shell has 40mm rigidity layer HS75 and inner round wall hardness number.
5. roller shell temper: carry out temper after Quenching Treatment, eliminate stress and reach hardness requirement, 535 DEG C of temperatures, are incubated 8 hours.
6. roller shell half finish turning manufacturing procedure:
Roller shell internal cylindrical turning, grinding, interior circular diameter is that Φ 380mm+0.01mm. roller shell inside and outside circle roughness reaches more than 0.8, roller shell inside and outside circle out-of-roundness <0.015mm, roller shell inside and outside circle nonstraightness <0.02mm, reaches technological requirement.
7. parent Roller Machining operation:
The cylindrical turning of parent roll, grinding reach with roller shell inner circle heat is joined and are of a size of ￠ 380mm+0.56mm-￠ 380mm+0.57mm, parent roll barrel roughness 0.8.
8. hot supporting compound working procedure:
Roller shell is contained in to HT11-610 type shaft furnace and is warming up to 200 DEG C, be incubated 2 hours; Take out fast and parent roll matches and is combined into roll entirety; Then by the tempering 8 hours under the temperature conditions of 200 DEG C of roll entirety, be cooled to 50 DEG C to come out of the stove with stove, eliminate internal stress.
9. by client Lai Tu, carry out last finish turning fine grinding, ￠ 520mm+0.03mm after testing, 1200mm+0.5mm, ￠ 520mm case hardness value HS74, roll entirety body of roll roughness reaches 0.8; Roll entirety body of roll out-of-roundness≤0.02mm; Roll entirety body of roll nonstraightness≤0.02mm; Qualified rear packaging warehouse-in after testing.
Embodiment 2 product specifications: ￠ 720mm*1500mm*3210mm
1. parent roll: parent roll is selected used hot rolled aluminium roll, with CTS-22A type supersonic detector, carries out ultrasonic examination detection to hot rolled aluminium roll, and parent roll does not have implosion, internal injury defect, can work out each procedure technology.
2. roller shell material: roller shell blank material 32Cr3Mo1V, forging ratio >=5; Do not allow white point, implosion, shrinkage cavity, skull patch and non-metallic inclusion to exist; Banded, desmachyme≤2.0 grade; Spheroidizing pearlitic spheroidization tissue reaches secondary standard, annealing hardness HB240; Detect with CTS-22A type supersonic detector.
3. rough turn by roller shell roughing drawing in the technological process of production.Guarantee external diameter ￠ 720mm+4mm ￠-720mm+5mm; Internal diameter ￠ 540mm-4mm-￠ 540mm-5mm; Roller shell inside and outside circle out-of-roundness≤1mm; Roller shell inside and outside circle nonstraightness≤1mm; Roller shell inside and outside circle roughness 3.2.Reach roughing drawing requirement in the technological process of production;
4. roller shell Quenching Treatment: classification intensification heating process: roller shell is contained in while being directly warmed up to 600 DEG C in HT07-107 type trolley type heating furnace, is incubated 2 hours, then heat up 100 DEG C with every 1 hour, be warming up to 900 DEG C, be incubated 2 hours; Spray roller shell cylindrical with 5MPa high-pressure water mist and be cooled to 220 DEG C, quench 13 minutes, to 1.5MPa low pressure water mist sprinkling for roller shell inner circle, then send into oil quenching bath slow cooling to 80-90 DEG C, cooling 28 minutes simultaneously.Guarantee that it is HS50-55 that 90mm wall thickness roller shell has 50mm rigidity layer HS70 and inner round wall hardness number.
5. roller shell temper: carry out temper after Quenching Treatment, eliminate stress and reach hardness requirement, 545 DEG C of temperatures, are incubated 10 hours.
6. roller shell half finish turning manufacturing procedure:
Roller shell internal cylindrical turning, grinding, interior circular diameter is that Φ 540mm+0.01mm. roller shell inside and outside circle roughness reaches more than 0.8, roller shell inside and outside circle out-of-roundness <0.015mm, roller shell inside and outside circle nonstraightness <0.02mm, reaches technological requirement.
7. parent Roller Machining operation:
The cylindrical turning of parent roll, grinding, reach with roller shell inner circle heat is joined and be of a size of ￠ 540mm+0.72mm-￠ 540mm+0.73mm.Parent roll barrel roughness 0.8.
8. hot supporting compound working procedure:
Roller shell is contained in to HT11-610 type shaft furnace and is warming up to 200 DEG C, be incubated 2 hours; Take out fast and parent roll matches and is combined into roll entirety; Then by the tempering 10 hours under the temperature conditions of 200 DEG C of roll entirety, be cooled to 50 DEG C to come out of the stove with stove, eliminate internal stress.
9. by client Lai Tu, carry out last finish turning fine grinding, ￠ 720mm+0.03mm after testing, 1500mm+0.5mm, ￠ 720mm case hardness value HS70, roll entirety body of roll roughness reaches 0.8.Roll entirety body of roll out-of-roundness≤0.02mm; Roll entirety body of roll nonstraightness≤0.02mm; Qualified rear packaging warehouse-in after testing.
Embodiment 3 product specifications: ￠ 850mm*1800mm*3580mm
1. parent roll: parent roll is selected used hot rolled aluminium roll, with CTS-22A type supersonic detector, carries out ultrasonic examination detection to hot rolled aluminium roll, and parent roll does not have implosion, internal injury defect, can work out each procedure technology.
2. roller shell material: roller shell blank material 32Cr3Mo1V, forging ratio >=5; Do not allow white point, implosion, shrinkage cavity, skull patch and non-metallic inclusion to exist; Banded, desmachyme≤2.0 grade; Spheroidizing pearlitic spheroidization tissue reaches secondary standard, annealing hardness HB240; Detect with CTS-22A type supersonic detector.
3. rough turn by roller shell roughing drawing in the technological process of production.Guarantee external diameter ￠ 850mm+4mm-￠ 850mm+5mm; Internal diameter ￠ 650mm-4mm-￠ 650mm-5mm; Roller shell inside and outside circle out-of-roundness≤1mm; Roller shell inside and outside circle nonstraightness≤1mm; Roller shell inside and outside circle roughness 3.2.Reach roughing drawing requirement in the technological process of production;
4. roller shell Quenching Treatment: classification intensification heating process: roller shell is contained in while being directly warmed up to 600 DEG C in HT07-107 type trolley type heating furnace, is incubated 2 hours, then heat up 100 DEG C with every 1 hour, be warming up to 900 DEG C, be incubated 2 hours; Spray roller shell cylindrical with 5MPa high-pressure water mist and be cooled to 250 DEG C, quench 14 minutes, to 1.5MPa low pressure water mist sprinkling for roller shell inner circle, then send into oil quenching bath slow cooling to 80-90 DEG C, cooling 30 minutes simultaneously.Guarantee that it is HS50-55 that 100mm wall thickness roller shell has 60mm rigidity layer HS70 and inner round wall hardness number.
5. roller shell temper: carry out temper after Quenching Treatment, eliminate stress and reach hardness requirement, 545 DEG C of temperatures, are incubated 12 hours.
6. roller shell half finish turning manufacturing procedure:
Roller shell internal cylindrical turning, grinding, interior circular diameter is that Ф 650mm+0.03mm. roller shell inside and outside circle roughness reaches more than 0.8, roller shell inside and outside circle out-of-roundness <0.03mm, roller shell inside and outside circle nonstraightness <0.03mm, reaches technological requirement.
7. parent Roller Machining operation: the cylindrical turning of parent roll, grinding, reach with roller shell inner circle heat is joined and be of a size of ￠ 650mm+1.05mm-￠ 650mm+1.07mm.Parent roll barrel roughness 0.8.
8. hot supporting compound working procedure:
Roller shell is contained in to HT11-610 type shaft furnace and is warming up to 200 DEG C, be incubated 2 hours; Take out fast and parent roll matches and is combined into roll entirety; Then by the tempering 12 hours under the temperature conditions of 200 DEG C of roll entirety, be cooled to 50 DEG C to come out of the stove with stove, eliminate internal stress.
9. by client Lai Tu, carry out last finish turning fine grinding, ￠ 850mm+0.05mm after testing, 1800mm+0.5mm, ￠ 850mm case hardness value HS70, roll entirety body of roll roughness reaches 0.8; Roll entirety body of roll out-of-roundness≤0.03mm; Roll entirety body of roll nonstraightness≤0.03; Qualified rear packaging warehouse-in after testing.
Claims (1)
1. a processing technology for hot rolled aluminium roll regeneration, is characterized in that: comprise following procedure of processing:
(1) parent roll:
Parent roll is selected used hot rolled aluminium roll, hot rolled aluminium roll is carried out to ultrasonic examination detection with supersonic detector, and parent roll exists without implosion, internal injury defect;
(2) roller shell material:
Roller shell material 32Cr3Mo1V, forging ratio >=5; Do not allow white point, implosion, shrinkage cavity, skull patch and non-metallic inclusion to exist; Banded, desmachyme≤2.0 grade; Spheroidizing pearlitic spheroidization tissue reaches secondary standard, annealing hardness HB240; Detect with supersonic detector;
(3) roller shell roughing operation:
Rough turn by roller shell roughing drawing in the technological process of production; Guarantee outside diameter ￠ 520mm+4mm-￠ 520mm+5mm; Internal diameter ￠ 380mm-4mm-￠ 380mm-5mm; Roller shell inside and outside circle out-of-roundness≤1mm; Roller shell inside and outside circle nonstraightness≤1mm; Roller shell inside and outside circle roughness 3.2;
(4) roller shell Quenching Treatment:
Classification intensification heating process: roller shell is contained in while being directly warmed up to 600 DEG C in HT07-107 type trolley type heating furnace, is incubated 2 hours, then heat up 100 DEG C with every 1 hour, be warming up to 900 DEG C, be incubated 2 hours; Spray roller shell cylindrical with 5MPa high-pressure water mist and be cooled to 220 DEG C, quench 10 minutes, to 1.5MPa low pressure water mist sprinkling for roller shell inner circle, then send into oil quenching bath slow cooling to 80-90 DEG C, cooling 25 minutes simultaneously; Guarantee that it is HS50-55 that 70mm wall thickness roller shell has 40mm rigidity layer HS75 and inner round wall hardness number;
(5) roller shell temper:
After Quenching Treatment, carry out temper, eliminate stress and reach hardness requirement; 535 DEG C of temperatures, are incubated 8 hours;
(6) roller shell half finish turning manufacturing procedure:
Roller shell inner circle is through turning, grinding, interior circular diameter is that Φ 380mm+0.01mm. roller shell inside and outside circle roughness reaches more than 0.8, roller shell inside and outside circle out-of-roundness <0.015mm, roller shell inside and outside circle nonstraightness <0.02mm, reaches technological requirement;
(7) parent Roller Machining operation:
The cylindrical turning of parent roll, grinding reach with roller shell inner circle heat is joined and are of a size of ￠ 380mm+0.56mm-￠ 380mm+0.57mm, parent roll barrel roughness 0.8;
(8) hot supporting compound working procedure: roller shell is contained in to HT11-610 type shaft furnace and is warming up to 200 DEG C, be incubated 2 hours; Take out fast and parent roll matches and is combined into roll entirety; Then by the tempering 8 hours under the temperature conditions of 200 DEG C of roll entirety, be cooled to 50 DEG C to come out of the stove with stove, eliminate internal stress;
(9) turning of roll entirety, grinding process:
Carry out last finish turning fine grinding, making specification is that the product of ￠ 520mm*1200mm*2860mm reaches ￠ 520mm+0.03mm after testing, 1200mm+0.5mm, and ￠ 520mm case hardness value HS74, roll entirety body of roll roughness reaches 0.8; Roll entirety body of roll out-of-roundness≤0.02mm; Roll entirety body of roll nonstraightness≤0.02mm; Qualified rear packaging warehouse-in after testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180011.3A CN102672437B (en) | 2012-06-04 | 2012-06-04 | Processing technology for recycling hot-rolled aluminum plate mill roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180011.3A CN102672437B (en) | 2012-06-04 | 2012-06-04 | Processing technology for recycling hot-rolled aluminum plate mill roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102672437A CN102672437A (en) | 2012-09-19 |
| CN102672437B true CN102672437B (en) | 2014-07-30 |
Family
ID=46805343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210180011.3A Active CN102672437B (en) | 2012-06-04 | 2012-06-04 | Processing technology for recycling hot-rolled aluminum plate mill roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102672437B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962652B (en) * | 2012-12-17 | 2015-03-11 | 重庆京庆重型机械股份有限公司 | Processing method for roller sleeve of roller press |
| CN108994529A (en) * | 2018-07-05 | 2018-12-14 | 湖南三泰新材料股份有限公司 | Combination process, bimetallic composite roll set and the roll of Dual-metal roller set |
| CN109108569A (en) * | 2018-09-13 | 2019-01-01 | 李统帅 | A kind of waste and old backing roll insetting sleeve repair technique of milling train |
| CN109865982A (en) * | 2019-04-01 | 2019-06-11 | 洛阳工信机械设备研究所有限公司 | It is a kind of for the large and medium-sized completely new renovation technique for scrapping backing roll |
| CN111804733B (en) * | 2020-07-07 | 2022-03-15 | 酒泉钢铁(集团)有限责任公司 | Machining and assembling method of casting roller for aluminum alloy casting and rolling |
| CN112247478A (en) * | 2020-09-24 | 2021-01-22 | 酒泉钢铁(集团)有限责任公司 | Copper alloy casting roller sleeve assembling method |
| CN112692510B (en) * | 2020-12-17 | 2022-06-21 | 天津重型装备工程研究有限公司 | Repairing method for local peeling of supporting roller |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173403A (en) * | 1996-08-13 | 1998-02-18 | 鞍山钢铁集团公司 | Sleeving regeneration tech. for cold-rolling working roller |
| EP0910489B1 (en) * | 1996-07-11 | 2000-05-17 | Usinor | Element of a continuous metal casting ingot mould with a copper or copper alloy cooled wall comprising on its external surface a metal coating, and method of coating |
| CN102152058A (en) * | 2011-05-11 | 2011-08-17 | 天津冶金集团重型机械制造有限公司 | Surfacing repair method for large cold-rolled supporting roll |
-
2012
- 2012-06-04 CN CN201210180011.3A patent/CN102672437B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0910489B1 (en) * | 1996-07-11 | 2000-05-17 | Usinor | Element of a continuous metal casting ingot mould with a copper or copper alloy cooled wall comprising on its external surface a metal coating, and method of coating |
| CN1173403A (en) * | 1996-08-13 | 1998-02-18 | 鞍山钢铁集团公司 | Sleeving regeneration tech. for cold-rolling working roller |
| CN102152058A (en) * | 2011-05-11 | 2011-08-17 | 天津冶金集团重型机械制造有限公司 | Surfacing repair method for large cold-rolled supporting roll |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102672437A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102672437B (en) | Processing technology for recycling hot-rolled aluminum plate mill roll | |
| CN107513677B (en) | A kind of spheroid shape face tank aluminium alloy Loadings On Hemispherical Shell method for controlling heat treatment deformation | |
| CN104032117B (en) | A kind of heat treatment method of ultrahigh hardness non-ferrous metal cold roll | |
| CN102489952B (en) | Method for manufacturing titanium alloy thick-wall pressure-resistant cylinder body | |
| CN102274854A (en) | Process for manufacturing superascoloy stainless steel tube | |
| CN109355561B (en) | Aluminum foil mill working roll and manufacturing method thereof | |
| CN105108457A (en) | Processing method of overall passive plate | |
| CN104328266A (en) | Heat treatment process of large-diameter thin-walled bearing ring | |
| CN103223579A (en) | Manufacturing method of milling cutter | |
| CN103286248A (en) | Forging method of 1Cr12Ni3MoVN annular forged piece | |
| CN102294431A (en) | Method for manufacturing stationary blade ring blank forged piece of F-grade combustion gas turbine | |
| CN105171362A (en) | Method for manufacturing Sendzimir intermediate roll | |
| CN106583466A (en) | Rolled steel hot delivery and hot charging technology | |
| CN102618710A (en) | Method for reconstructing scrapped cold roll into qualified cold roll | |
| CN102962273B (en) | The manufacture method of the ultra-thin seamless steel pipe of vehicle glass fiber full wrapped cylinders cold-drawn | |
| CN106181261B (en) | The manufacture method of thin-wall high intensity frame tube | |
| CN102409270A (en) | Method for rolling large-sized aluminum alloy ring piece and performing solid solution treatment by using electric furnace | |
| CN104108010A (en) | Processing technology of ring gauge | |
| CN107322250A (en) | A kind of preparation method of gear ring | |
| CN100591790C (en) | Hydrogen embrittlement resistant roller and method for preparing same | |
| CN104328265A (en) | Quenching process for bearing ring raceway | |
| CN105479124A (en) | Processing method for aluminum die for rotor die casting | |
| CN105695699A (en) | Micro-deformation vacuum heat treatment process for 40CrNi steel gear | |
| CN108559828A (en) | A kind of technological process of flat cold-rolled sheet production line | |
| CN105112848A (en) | Technological method for salt-melting and metal-penetrating technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |