CN103173771B - A kind of method improving steel impact property - Google Patents
A kind of method improving steel impact property Download PDFInfo
- Publication number
- CN103173771B CN103173771B CN201310082716.6A CN201310082716A CN103173771B CN 103173771 B CN103173771 B CN 103173771B CN 201310082716 A CN201310082716 A CN 201310082716A CN 103173771 B CN103173771 B CN 103173771B
- Authority
- CN
- China
- Prior art keywords
- impact property
- steel
- cold
- alleviating
- treatment
- 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
- 238000000034 method Methods 0.000 title claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000005097 cold rolling Methods 0.000 claims abstract description 12
- 238000004381 surface treatment Methods 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 235000019628 coolness Nutrition 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 238000007127 saponification reaction Methods 0.000 claims description 6
- 238000010583 slow cooling Methods 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 150000002696 manganese Chemical class 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 3
- 239000013078 crystal Substances 0.000 abstract description 8
- 238000001953 recrystallisation Methods 0.000 abstract description 5
- 238000000137 annealing Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a kind of method improving steel impact property, by to raw-material underannealing process, surface treatment, cold rolling processing and a series of process of recrystallization annealing, obtain the steel that impact property improves more than 50-80% on original basis.The present invention, by controlling the unit cold deformation amount of alleviating and recrystallization annealing temperature and time, makes crystal grain comparatively original structure refinement, reaches the object of the impact property improving material; And be also improved by the product strength that the method obtains, not only surface quality is good, dimensional precision is high and superior comprehensive mechanical performance, has higher cost performance.
Description
Technical field
The invention belongs to high-performance metal materials and specific alloy material processing field, mainly relate to a kind of method improving steel impact property.
Background technology
What require product performance along with engineering machinery improves constantly, tackle the grain structure of oil cylinder material mutually, mechanical property has had requirements at the higher level, if particularly oil cylinder is under repeated stress environment, need bear certain fatigue strength, this has requirements at the higher level to the impact property of material, in general, the mechanical property of the thinner metal of crystal grain particularly toughness better, ballistic work is higher.
Summary of the invention
The object of this invention is to provide a kind of method improving steel impact property, by annealing and surface treatment, then viscous deformation is produced through cold-rolling method, substantially increase the intensity of metallic substance, hardness, the method can not only make metal forming, and the structure and properties of metal can be made greatly to improve, a kind of replacement product of super quality and competitive price is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of method improving steel impact property comprises the following steps:
1) 30CrMnSi or 27SiMn alloy structure steel is carried out underannealing process;
2) by step 1) resulting materials successively through the surface treatment of pickling, cleaning neutralization, phosphatization, saponification, then carry out cold rolling processing, the control cold deformation unit amount of alleviating is within the scope of 30-40%;
3) by step 2) material of gained carries out recrystallize process, and treatment temp is within the scope of 550 DEG C-700 DEG C, and insulation 3-6 hour, then slow cooling obtains to less than 300 DEG C air coolings of coming out of the stove the steel that impact property improves more than 50-80% on original basis.
Described underannealing process is carried out at 780 DEG C-820 DEG C.
The ratio of the weight that the described cold deformation unit amount of alleviating the i.e. material of unit length alleviates through cold-rolling treatment and original weight.
The treatment temp of recrystallize process in described step 3) is 580-620 DEG C.
Described acid cleaning process adopts mass concentration to be the hydrochloric acid soln of 15-20%, and the treatment time is 30-60 minute.
Described step 2) in adopt in parkerizing process zinc phosphate, manganese salt to adhere to phosphatize phosphate coat to carry out phosphatization.
The method of raising steel impact property provided by the invention has following beneficial effect:
1, the present invention makes slippage between lattice by cold rolling mode, select suitable cold deformation (i.e. the cold deformation unit amount of alleviating), generation slippage area is increased gradually, crystal grain gradually " fragmentation " becomes many positions to slightly different little crystal blocks, along with the increase of deflection, crystal grain gradually fragmentation attenuates.
2, in order to make material obtain excellent structure and properties, also recrystallize process must be carried out, the recrystallize of metal is different from liquid crystalization, its neither one stagnation point, because the lattice types of metal does not change, the temperature of metallic substance initial recrystallization and its deformation extent, chemical composition, rate of heating is relevant with factors such as heat-up times; The cold deformation of metal is larger, and its recrystallization temperature is just lower, and the crystal grain after recrystallize is thinner, after recrystallize, the defects such as the lattice distortion of cold deformation metal and crystal grain " fragmentation " and internal stress can be eliminated, and while thus intensity, hardness decline, plasticity and toughness greatly improve.
3, the present invention is by controlling the cold deformation amount of alleviating and recrystallization annealing temperature and time, makes crystal grain comparatively original structure refinement, greatly can improve the impact property index of material; And this product strength is also improved, not only surface quality is good, dimensional precision is high and superior comprehensive mechanical performance, has higher cost performance.
Embodiment
Further illustrate the present invention below in conjunction with embodiment, but embodiment is only the present invention is described, instead of is limited.
Embodiment 1:
By material specification 30CrMnSi φ 102mm × 12mm, underannealing process is carried out at 790 DEG C, carry out surface treatment procedure again, namely carry out pickling, cleaning neutralization, phosphatization, saponification process successively, then obtain by two cold mills are cold rolling the precision tube unit amount of alleviating 39.3% that dimensions is φ 90mm/ φ 74mm; Finally carry out recrystallize process, be divided into two groups during process, one group is incubated 3 hours at 580 DEG C, and another group was 620 DEG C of insulations 3 hours, and last all slow cooling are to less than 300 DEG C air coolings of coming out of the stove.
After above-mentioned steps process, the concrete technical indicator of the material of gained is as follows in table 1:
Table 1
Embodiment 2:
By material specification 27SiMn φ 121mm × 15mm, underannealing process is carried out at 820 DEG C, carry out surface treatment procedure again, namely pickling, cleaning neutralization, phosphatization, saponification process is carried out successively, then the precision tube that dimensions is φ 102mm/ φ 78mm is obtained, its unit amount of alleviating 32.1% by two cold mills are cold rolling; Finally carry out recrystallize process, design temperature is 580 DEG C, is incubated 5 hours, slow cooling less than 300 DEG C air coolings of coming out of the stove.
After above-mentioned steps process, the concrete technical indicator of the material of gained is as follows in table 2:
Table 2
Embodiment 3:
Improve a method for steel impact property, comprise the following steps:
1) 30CrMnSi alloy structure steel is carried out underannealing process at 800 DEG C;
2) by step 1) resulting materials successively through pickling, cleaning neutralization, phosphatization, saponification surface treatment; Then carry out cold rolling processing, control the cold deformation unit amount of alleviating 30%;
3) by step 2) material of gained carries out recrystallize process, and treatment temp, at 700 DEG C, is incubated 3 hours, and then slow cooling obtains to less than 300 DEG C air coolings of coming out of the stove the steel that impact property improves more than 78% on original basis.
Embodiment 4:
Improve a method for steel impact property, comprise the following steps:
1) 30CrMnSi alloy structure steel is carried out underannealing process at 780 DEG C;
2) by step 1) resulting materials successively through pickling, cleaning neutralization, phosphatization, saponification surface treatment; Then carry out cold rolling processing, control the cold deformation unit amount of alleviating 35%;
3) by step 2) material of gained carries out recrystallize process, and treatment temp, 550 DEG C of scopes, is incubated 6 hours, and then slow cooling obtains to less than 300 DEG C air coolings of coming out of the stove the steel that impact property improves more than 68% on original basis.
The ratio of the weight that alleviates through cold-rolling treatment of the material of the i.e. unit length of the amount of alleviating of cold deformation unit described in several embodiment and original weight above; Described acid cleaning process employing mass concentration is the hydrochloric acid HCl of 15-20%, and the treatment time is 30-60 minute; Adopt zinc phosphate, manganese salt to adhere to phosphatize phosphate coat in described parkerizing process and carry out phosphatization.
Claims (4)
1. improve a method for steel impact property, it is characterized in that, comprise the following steps:
1) 30CrMnSi or 27SiMn alloy structure steel is carried out underannealing process at 780 DEG C-820 DEG C;
2) by step 1) resulting materials successively through the surface treatment of pickling, cleaning neutralization, phosphatization, saponification, then carry out cold rolling processing, the control cold deformation unit amount of alleviating is within the scope of 30-40%; The ratio of the weight that the described cold deformation unit amount of alleviating the i.e. material of unit length alleviates through cold-rolling treatment and original weight;
3) by step 2) material of gained carries out recrystallize process, and adjustment treatment temp is at 550 DEG C-700 DEG C, and insulation 3-6 hour, then slow cooling obtains to less than 300 DEG C air coolings of coming out of the stove the steel that impact property improves more than 50-80% on original basis.
2. the method for raising steel impact property according to claim 1, is characterized in that: the treatment temp of recrystallize process in described step 3) is 580-620 DEG C.
3. the method for raising steel impact property according to claim 1, is characterized in that: described acid cleaning process adopts mass concentration to be the hydrochloric acid soln of 15-20%, and the treatment time is 30-60 minute.
4. the method for raising steel impact property according to claim 1, is characterized in that: described step 2) in adopt in parkerizing process zinc phosphate, manganese salt to adhere to phosphatize phosphate coat to carry out phosphatization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082716.6A CN103173771B (en) | 2013-03-15 | 2013-03-15 | A kind of method improving steel impact property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082716.6A CN103173771B (en) | 2013-03-15 | 2013-03-15 | A kind of method improving steel impact property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103173771A CN103173771A (en) | 2013-06-26 |
| CN103173771B true CN103173771B (en) | 2015-12-23 |
Family
ID=48633946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310082716.6A Active CN103173771B (en) | 2013-03-15 | 2013-03-15 | A kind of method improving steel impact property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103173771B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278541A (en) * | 2011-07-15 | 2011-12-14 | 宜昌中南精密钢管有限公司 | Bimetallic composite pipe and preparation method |
| CN102699104A (en) * | 2012-06-11 | 2012-10-03 | 常熟市旋力轴承钢管有限公司 | Preparation method of G20CrNiMo bearing steel pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001294982A (en) * | 2000-04-11 | 2001-10-26 | Nippon Steel Corp | High strength bend pipe and its producing method |
-
2013
- 2013-03-15 CN CN201310082716.6A patent/CN103173771B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278541A (en) * | 2011-07-15 | 2011-12-14 | 宜昌中南精密钢管有限公司 | Bimetallic composite pipe and preparation method |
| CN102699104A (en) * | 2012-06-11 | 2012-10-03 | 常熟市旋力轴承钢管有限公司 | Preparation method of G20CrNiMo bearing steel pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103173771A (en) | 2013-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105755409B (en) | A kind of heat treatment method for improving aluminium lithium alloy thin plate traumatic resistance energy | |
| CN102719643B (en) | Heat processing technology of high-carbon carbon steel coil rod for steel wire rope | |
| CN105369136A (en) | Hot-dipped aluminum zinc steel plate and manufacturing method thereof | |
| CN104032117A (en) | Heat treatment method for ultra-high-hardness nonferrous-metal cold roll | |
| CN102409223A (en) | Hot-rolled pickled sheet with low yield ratio and production method thereof | |
| CN106544586B (en) | A kind of effective low carbon low silicon hot-rolled coil of Pneumatic conveying and its manufacture method | |
| CN107931354A (en) | A kind of short flow process of high-ductility low yield strength titanium plate | |
| CN103469065A (en) | 340MPa-grade HSLA vehicle structural steel and production method thereof | |
| CN109609738B (en) | Large flat head precision screw wire for mobile phone and preparation method thereof | |
| CN104099529B (en) | A kind of steel pipe perforating heading and preparation method thereof | |
| CN103469060B (en) | The manufacture method of household electrical appliances punching press cold-rolled steel sheet | |
| CN105525236A (en) | Thermomechanical treatment method for aluminium alloy grain refinement | |
| CN103667649B (en) | Nb-treated hot-galvanized ultra-low carbon bake-hardening steel plate and manufacturing method thereof | |
| CN107385175B (en) | A kind of other deformation method of the band-like carbide grade of reduction GCr15 bearing steel | |
| CN103205662B (en) | Method of acquiring tri-modal microstructure in near-alpha titanium alloy through furnace cooling | |
| CN103173771B (en) | A kind of method improving steel impact property | |
| CN104593698A (en) | Method for manufacturing high-strength cold-rolled weather resisting steel plates and high-strength cold-rolled weather resisting steel plates | |
| CN103397288A (en) | Machining process of zinc-copper with mechanical properties controlled by machining rate | |
| CN108796377B (en) | Preparation method of high-strength steel with high hole expansion performance | |
| CN105543461A (en) | Thermal treatment process for cold-rolled steel strip S50C for automobile flywheel disc | |
| CN107058922A (en) | A kind of heat treatment method for preparing 2E12 aluminium alloys annealing fine grain sheet material | |
| CN102712974B (en) | Cold-rolled steel plate having excellent post-aging moldability and shape retention | |
| CN105543715A (en) | High-intensity and corrosion-resistant high-nitrogen steel fastener and manufacturing process thereof | |
| CN105568145A (en) | Cold-rolled ultrahigh-strength biphase steel plate for vehicle with corrosion resistance and preparation method thereof | |
| CN104152746A (en) | Manufacturing technique for improving longitudinal plastic strain ratio of titanium plate |
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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method to improve the impact property of steel Effective date of registration: 20220927 Granted publication date: 20151223 Pledgee: Hubei Three Gorges Rural Commercial Bank Co.,Ltd. Qiaobian Sub branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2022980016697 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230911 Granted publication date: 20151223 Pledgee: Hubei Three Gorges Rural Commercial Bank Co.,Ltd. Qiaobian Sub branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2022980016697 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Method for Improving the Impact Performance of Steel Materials Effective date of registration: 20230920 Granted publication date: 20151223 Pledgee: Hubei Three Gorges Rural Commercial Bank Co.,Ltd. Qiaobian Sub branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2023980057665 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20151223 Pledgee: Hubei Three Gorges Rural Commercial Bank Co.,Ltd. Qiaobian Sub branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2023980057665 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method to improve the impact performance of steel materials Granted publication date: 20151223 Pledgee: Hubei Three Gorges Rural Commercial Bank Co.,Ltd. Qiaobian Sub branch Pledgor: YICHANG ZHONGNAN PRECISION STEEL PIPE CO.,LTD. Registration number: Y2024980040728 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |