CN103009011B - Processing method for stainless steel high-strength bolt - Google Patents
Processing method for stainless steel high-strength bolt Download PDFInfo
- Publication number
- CN103009011B CN103009011B CN201210584163.XA CN201210584163A CN103009011B CN 103009011 B CN103009011 B CN 103009011B CN 201210584163 A CN201210584163 A CN 201210584163A CN 103009011 B CN103009011 B CN 103009011B
- Authority
- CN
- China
- Prior art keywords
- thread
- hours
- strength
- bolt
- stainless steel
- 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
- 239000010935 stainless steel Substances 0.000 title claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 238000011282 treatment Methods 0.000 claims abstract description 16
- 230000032683 aging Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000003350 kerosene Substances 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 5
- 238000002161 passivation Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 2
- 238000002594 fluoroscopy Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 238000004881 precipitation hardening Methods 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 101000610640 Homo sapiens U4/U6 small nuclear ribonucleoprotein Prp3 Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 101001110823 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 60S ribosomal protein L6-A Proteins 0.000 description 1
- 101000712176 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 60S ribosomal protein L6-B Proteins 0.000 description 1
- 102100040374 U4/U6 small nuclear ribonucleoprotein Prp3 Human genes 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
- Forging (AREA)
Abstract
The invention discloses a processing method for a stainless steel high-strength bolt. The method comprises blanking, lubricating, thermal heading, solution treatment, cooling, descaling, processing of diameter of a threaded rolled thread billet, aging treatment, polishing, rolling of a thread and an arc at the connection part of a head part and a rod, flaw detection, cleaning and passivating. According to the method, precipitation hardening stainless steel is taken as a part blank, the head part is formed in one step through thermal heading, the processing period is greatly shortened, the diameter of the thread billet is processed by a shortening rod, the thread is rolled after aging treatment, the use strength of a thread part of a product is improved, flaw detection is carried out after thread rolling, a cracked product resulting from procedures like thermal heading, thermal treatment and thread rolling is prevented from going to the procedures like assembly and use as well as rolling of the arc R below a bolt head, so as to improve the connection strength of the head part and the rod part of the product, the strength of the bolt is greatly enhanced, and the fabricated part has relatively strong impact toughness and yield strength.
Description
Technical field
The invention belongs to machinery manufacturing technology field, particularly a kind of processing method of stainless steel high-strength bolt.
Background technology
In the standard component of the industry such as Aeronautics and Astronautics, high ferro, high-strength bolt is that some requirement of strength are high through being everlasting, assemble the securing member of use under the condition of work under bad environment (as large in height vibration, high air humidity, the temperature difference etc.), at present, during China generally uses, carbon and low-alloy unimach makes high-strength bolt (σ b >=1500MPa), under high stress, easily brittle fracture occurs during use, namely hydrogen embrittlement easily causes the appearance of the dangerous phenomenons such as bolt turns around, the fracture of bar portion; And the processing technology of this bolt generally adopts cold-heading molding, in order to improve part strength, before cold-heading molding, raw material need carry out drawing procedure to improve raw material intensity, but drawing procedure easily causes decarburization to raw material surface, be unfavorable for product finished heat treatment, and tempering heat treatment temperature is generally at about 310 DEG C, hardness is greater than HRC50, such part toughness is poor, and yield strength is low; And heat treatment step is all be arranged in rolled thread completion to gain in strength afterwards, bolt precision etc. are also high less than processing cost while guarantee.
Summary of the invention
The object of the invention is to: the processing method that a kind of stainless steel high-strength bolt is provided, what the brittle fracture easily occurred with the high-strength bolt solving traditional diamond-making technique processing caused turns around, rupture in bar portion, toughness is poor, the problem that yield strength is low, crudy is difficult to control, precision is low and processing cost is high.
The object of the invention is to be achieved by following technical solution:
A processing method for stainless steel high-strength bolt, the method comprises the following steps:
A blank is pressed bolt processing length, diameter blanking by ();
B () carries out copper facing lubrication to the blank segmentation after blanking;
C blank is put into the hot upsetting of upsetting molding jig and is gone out bolt head dummy by ();
D () carries out solution treatment in vacuum or inert gas stove, solid solubility temperature is 930 DEG C ~ 985 ± 25 DEG C, and the time is 2 ~ 3.5 hours;
E workpiece is cooled 2 hours in 24 hours by () after solution treatment under refrigerating gas;
F the oxide skin of the rear surface of the work of cooling is removed in () sandblasting;
G () adopts the mode of contracting bar processing to process screw thread rolled thread base footpath;
H () through the Ageing Treatment of 4 hours, then carries out destressing process in 12 hours at 480 DEG C ~ 550 DEG C at 195 DEG C ~ 210 DEG C;
(i) adopt centreless grinding to carry out polishing grinding to workpiece bar portion and thread billet dia;
J () is by product screw thread requirement Choice and process equipment rolling screw thread;
The circular arc R of (k) rolling supporting surface and bar portion connecting portion;
(l) fluoroscopy;
M () washes away surface of the work greasy dirt post-passivation with cleaning agent.
Described blank is PH stainless steel 0Cr13Ni8Mo2Al, and this material has high strength, high tenacity and the feature such as corrosion-resistant, effectively can promote strength and toughness and the corrosion resistance of finished product bolt.
Because blank is PH stainless steel 0Cr13Ni8Mo2Al, its intensity is high, and for preventing the damage of upsetting molding jig, therefore the material of described upsetting molding jig is carbide alloy YG15.
Process equipment in described step (j) is the RP18/24/30/50E CNC series thread rolling machine that Italian ORT company produces.
Cleaning agent in described step (m) is aviation kerosine.
In described step (c) hot upsetting shaping after initial workpiece workpiece do metallographic examination, prevent burning, overheated.
Compared with prior art, the processing method of stainless steel high-strength bolt provided by the invention, selective precipitation hardened stainless steel 0Cr13Ni8Mo2Al as part turned blank, head by hot upsetting one-shot forming, greatly reduce the process-cycle, thread billet dia adopts the processing of contracting bar, rolling screw thread after Ageing Treatment, improve product screw thread part working strength; Flaw detection is had after rolling screw thread, the cracking product that prevents the operations such as hot upsetting, heat treatment, rolling screw thread to cause flows into that assembling uses, the technique such as R improves product head and bar portion bonding strength under rolling bolt head, greatly strengthen the intensity of bolt, fabricated part hardness, at about HRC45, has stronger toughness and yield strength.
Detailed description of the invention
Below in conjunction with embodiment, technical scheme of the present invention is described further, but described in scope required for protection is not limited to:
Embodiment 1: screw thread specification need be processed when being less than or equal to the high-strength bolt of M8, first PH stainless steel 0Cr13Ni8Mo2Al is pressed Bolt sizes blanking, blank after blanking is put into the hot upsetting of upsetting molding jig and is gone out bolt head dummy after copper facing lubrication, at 930 ± 25 DEG C, workpiece is carried out solution treatment 2 hours in vacuum or inert gas stove, 2 hours are cooled again with the nitrogen that temperature is-73 DEG C, sandblasting adopts the mode of contracting bar processing to process screw thread rolled thread base footpath after removing the oxide skin of the rear surface of the work of cooling, through the Ageing Treatment of 4 hours at 480 DEG C, destressing process in 12 hours is carried out again at 195 DEG C, centreless grinding is adopted to carry out polishing grinding to workpiece bar portion and thread billet dia, the RP18E CNC thread rolling machine rolling screw thread selecting Italian ORT company to produce and the circular arc R of supporting surface and bar portion connecting portion, aviation kerosine cleaning workpiece is used after fluoroscopic examination, remove surface and oil contaminant post-passivation to get product.
Embodiment 2: when need process the high-strength bolt of screw thread specification between M8 ~ M24, first PH stainless steel 0Cr13Ni8Mo2Al is pressed Bolt sizes blanking, blank after blanking is put into the hot upsetting of upsetting molding jig and is gone out bolt head dummy after copper facing lubrication, at 967 ± 25 DEG C, workpiece is carried out solution treatment 3 hours in vacuum or inert gas stove, 2 hours are cooled again with the nitrogen that temperature is-73 DEG C, sandblasting adopts the mode of contracting bar processing to process screw thread rolled thread base footpath after removing the oxide skin of the rear surface of the work of cooling, through the Ageing Treatment of 4 hours at 480 DEG C, destressing process in 12 hours is carried out again at 195 DEG C, centreless grinding is adopted to carry out polishing grinding to workpiece bar portion and thread billet dia, the RP24E CNC thread rolling machine rolling screw thread selecting Italian ORT company to produce and the circular arc R of supporting surface and bar portion connecting portion, aviation kerosine cleaning workpiece is used after fluoroscopic examination, remove surface and oil contaminant post-passivation to get product.
Embodiment 3: when need process the high-strength bolt of screw thread specification between M24 ~ M42, first PH stainless steel 0Cr13Ni8Mo2Al is pressed Bolt sizes blanking, blank after blanking is put into the hot upsetting of upsetting molding jig and is gone out bolt head dummy after copper facing lubrication, at 985 ± 25 DEG C, workpiece is carried out solution treatment 3.5 hours in vacuum or inert gas stove, 2 hours are cooled again with the nitrogen that temperature is-73 DEG C, sandblasting adopts the mode of contracting bar processing to process screw thread rolled thread base footpath after removing the oxide skin of the rear surface of the work of cooling, through the Ageing Treatment of 4 hours at 480 DEG C, destressing process in 12 hours is carried out again at 195 DEG C, centreless grinding is adopted to carry out polishing grinding to workpiece bar portion and thread billet dia, the RP30E CNC thread rolling machine rolling screw thread selecting Italian ORT company to produce and the circular arc R of supporting surface and bar portion connecting portion, aviation kerosine cleaning workpiece is used after fluoroscopic examination, remove surface and oil contaminant post-passivation to get product.
Claims (1)
1. a processing method for stainless steel high-strength bolt, is characterized in that: the method comprises the following steps:
A blank is pressed bolt processing length, diameter blanking by ();
B () carries out copper facing lubrication to the blank segmentation after blanking;
C blank is put into the hot upsetting of upsetting molding jig and is gone out bolt head dummy by ();
D () carries out solution treatment in vacuum or inert gas stove, solid solubility temperature is 930 ~ 985 ± 25 DEG C, and the time is 2 ~ 3.5 hours;
E workpiece is cooled 2 hours in 24 hours by () after solution treatment under refrigerating gas;
F the oxide skin of the rear surface of the work of cooling is removed in () sandblasting;
G () adopts the mode of contracting bar processing to process screw thread rolled thread base footpath;
H () through the Ageing Treatment of 4 hours, then carries out destressing process in 12 hours at temperature is 480 ~ 550 DEG C at 195 ~ 210 DEG C;
I () adopts centreless grinding to carry out polishing grinding to workpiece bar portion and thread billet dia;
J () is by product screw thread requirement Choice and process equipment rolling screw thread;
The circular arc R of (k) rolling supporting surface and bar portion connecting portion;
(l) fluoroscopy;
M () washes away surface of the work greasy dirt post-passivation with cleaning agent;
Described blank is PH stainless steel 0Cr13Ni8Mo2Al;
The material of described upsetting molding jig is carbide alloy YG15;
Cleaning agent in described step (m) is aviation kerosine;
In described step (c) hot upsetting shaping after initial workpiece workpiece do metallographic examination;
Refrigerating gas in described step (e) is nitrogen, and temperature is-73 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584163.XA CN103009011B (en) | 2012-12-28 | 2012-12-28 | Processing method for stainless steel high-strength bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584163.XA CN103009011B (en) | 2012-12-28 | 2012-12-28 | Processing method for stainless steel high-strength bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103009011A CN103009011A (en) | 2013-04-03 |
| CN103009011B true CN103009011B (en) | 2015-05-20 |
Family
ID=47958415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210584163.XA Active CN103009011B (en) | 2012-12-28 | 2012-12-28 | Processing method for stainless steel high-strength bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103009011B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212958A (en) * | 2013-05-10 | 2013-07-24 | 江苏永昊高强度螺栓有限公司 | Processing method of connecting piece for aircraft engine |
| CN103286246B (en) * | 2013-05-16 | 2015-06-24 | 湖北德克特种异型高强螺栓有限公司 | Method for manufacturing high-strength screws with fine threads for wind-driven generator foundations |
| CN103667643A (en) * | 2013-12-12 | 2014-03-26 | 无锡透平叶片有限公司 | Heat treatment process for improving strength of PH13-8Mo stainless steel material |
| CN104454883B (en) * | 2014-12-01 | 2016-10-12 | 海盐远洋标准件有限公司 | A kind of Wheel set bolt processing technique |
| CN106336778B (en) * | 2016-09-01 | 2019-03-01 | 宁波群力紧固件制造有限公司 | A kind of abrasion-resistant blade stud |
| CN106734791A (en) * | 2016-12-12 | 2017-05-31 | 陕西宏远航空锻造有限责任公司 | A kind of control technique of PH13 8Mo forging forging temperature on horizontal forging and upsetting machine |
| CN107322237A (en) * | 2017-06-22 | 2017-11-07 | 贵州精立航太科技有限公司 | A kind of processing technology of high-temperature alloy bolt |
| CN107414423A (en) * | 2017-07-26 | 2017-12-01 | 南通安赛乐紧固件有限公司 | A kind of rack bolt forges moulding process |
| CN107570976A (en) * | 2017-10-24 | 2018-01-12 | 苏州华丰不锈钢紧固件有限公司 | A kind of aftertreatment technology of stainless steel bolt |
| CN109023152A (en) * | 2018-08-31 | 2018-12-18 | 贵州航铄工业股份有限公司 | A kind of manufacturing method of high-strength anti-fatigue bolt alloy material and bolt |
| CN109382774A (en) * | 2018-10-15 | 2019-02-26 | 贵州航天特种车有限责任公司 | A kind of cunning sticks up retaining mechanism and its processing method |
| CN110026735A (en) * | 2019-02-01 | 2019-07-19 | 上海加宁新材料科技有限公司 | A kind of manufacturing method of superhigh intensity bolt |
| CN110355531B (en) * | 2019-07-25 | 2020-11-10 | 王丽 | Processing technology of ring groove rivet |
| CN110665773A (en) * | 2019-09-29 | 2020-01-10 | 瑞安市科达汽车配件有限公司 | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell |
| CN110724797B (en) * | 2019-10-23 | 2022-05-06 | 成都飞机工业（集团）有限责任公司 | Method for processing aviation PH13-8Mo part |
| CN111421309A (en) * | 2020-05-26 | 2020-07-17 | 王丽 | Titanium alloy hake rivet manufacturing process |
| CN114227171A (en) * | 2021-12-25 | 2022-03-25 | 苏州海墨精密五金有限公司 | Production method for efficiently producing high-strength bolt |
| CN115852111A (en) * | 2022-12-23 | 2023-03-28 | 西北工业大学 | Strengthening method of PH13-8Mo material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100192A (en) * | 1985-04-01 | 1986-09-03 | 西安冶金建筑学院 | Lubricant for steel wire hot deformation treatment |
| US4841121A (en) * | 1987-06-18 | 1989-06-20 | The Taylor-Winfield Corporation | Hot heading plastic rivets by resistance heating |
| CN1570185A (en) * | 2004-04-30 | 2005-01-26 | 石家庄铁道学院 | Shape memory alloy check nut and manufacturing technique |
| CN101549448A (en) * | 2008-03-31 | 2009-10-07 | 江都狮鹤高强度螺栓有限公司 | Processing technology of high-strength bolt for steel net rack bolt ball joint |
| CN102527898A (en) * | 2012-02-02 | 2012-07-04 | 无锡天隆高强螺栓有限公司 | Bolt-heating upsetting-forming technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5564940A (en) * | 1978-11-02 | 1980-05-16 | Sadao Imanishi | Production of bolt blank with claw by hot heading method |
-
2012
- 2012-12-28 CN CN201210584163.XA patent/CN103009011B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100192A (en) * | 1985-04-01 | 1986-09-03 | 西安冶金建筑学院 | Lubricant for steel wire hot deformation treatment |
| US4841121A (en) * | 1987-06-18 | 1989-06-20 | The Taylor-Winfield Corporation | Hot heading plastic rivets by resistance heating |
| CN1570185A (en) * | 2004-04-30 | 2005-01-26 | 石家庄铁道学院 | Shape memory alloy check nut and manufacturing technique |
| CN101549448A (en) * | 2008-03-31 | 2009-10-07 | 江都狮鹤高强度螺栓有限公司 | Processing technology of high-strength bolt for steel net rack bolt ball joint |
| CN102527898A (en) * | 2012-02-02 | 2012-07-04 | 无锡天隆高强螺栓有限公司 | Bolt-heating upsetting-forming technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103009011A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103009011B (en) | Processing method for stainless steel high-strength bolt | |
| JP4448208B2 (en) | Stainless steel bolt manufacturing method | |
| CN102230145B (en) | Method for producing TC25 two-phase titanium alloy rod material with large specification | |
| CN103820726A (en) | Method for manufacturing bolts with relatively high fatigue strength | |
| CN102699642A (en) | Process for machining rail traffic driven gear | |
| CN104646956A (en) | Process for machining ball cage bell-like shell | |
| CN107283122A (en) | A kind of manufacturing process of automobile hollow semiaxis | |
| CN104400344A (en) | Bolt manufacturing technology | |
| CN109465607A (en) | A kind of processing technology of high-strength bolt | |
| CN112718910A (en) | Manufacturing method of large-caliber TC4 titanium alloy thick-wall pipe | |
| CN102319853A (en) | Production method for TA19 titanium alloy strip | |
| CN110564924A (en) | Quenching and tempering and integral quenching process method for 40CrMnMo steel | |
| CN110340617A (en) | A kind of anti-corrosion and high strength hex bolts production technology | |
| CN103088267B (en) | The preparation method of Lengthened bolt | |
| CN112090981A (en) | S690Q material reinforced upgrading method | |
| CN111843404A (en) | Manufacturing process of automotive steering tie rod arm | |
| JP2010172947A (en) | Method of super-high temperature hot forging | |
| CN111843403A (en) | Manufacturing process of automobile steering knuckle arm | |
| CN103737020B (en) | The method for turning of the steam turbine main steam control valve bar cylindrical of high temperature alloy GH901 material | |
| CN101568396A (en) | Method of improving life of die for hot or warm forging | |
| JP4519053B2 (en) | Manufacturing method of high strength nut | |
| CN103846635A (en) | Forging method for automotive engine crankshaft | |
| KR101340088B1 (en) | Forging a cutting tool to cut the material and manufacturing method thereof | |
| CN105014312A (en) | Processing method for fork-shaped pull rods | |
| CN105773078B (en) | Machining and forming process of automobile half shaft |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130403 Assignee: Beijing Chengli Technology Co., Ltd. Assignor: Guizhou Jingli Hangtai Technology Co., Ltd. Contract record no.: 2015110000040 Denomination of invention: Processing method for stainless steel high-strength bolt Granted publication date: 20150520 License type: Exclusive License Record date: 20150818 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Beijing Chengli Technology Co., Ltd. Assignor: Guizhou Jingli Hangtai Technology Co., Ltd. Contract record no.: 2015110000040 Date of cancellation: 20160516 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160705 Address after: 101102, Beijing Zhongguancun science and Technology Park, Tongzhou Park Jinqiao Technology Industrial base, No. 115, middle ring road, building 17 Patentee after: Beijing Chengli Technology Co., Ltd. Address before: 563000 Guizhou Province, Zunyi City New District of San Po Road Building 221 sheep Patentee before: Guizhou Jingli Hangtai Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20190920 Address after: No. 33 Building, Yingtian Gonggu Industrial Park, Southern New District, Zunyi City, Guizhou Province Patentee after: Guizhou Jingli Hangtai Technology Co., Ltd. Address before: 101102, Beijing Zhongguancun science and Technology Park, Tongzhou Park Jinqiao Technology Industrial base, No. 115, middle ring road, building 17 Patentee before: Beijing Chengli Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |