CN209792271U - pretreatment device for die steel - Google Patents
pretreatment device for die steel Download PDFInfo
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- CN209792271U CN209792271U CN201822241696.3U CN201822241696U CN209792271U CN 209792271 U CN209792271 U CN 209792271U CN 201822241696 U CN201822241696 U CN 201822241696U CN 209792271 U CN209792271 U CN 209792271U
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- Prior art keywords
- die steel
- roller
- powder
- steel workpiece
- metal electrode
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 6
- 229910001566 austenite Inorganic materials 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 4
- 210000005056 cell body Anatomy 0.000 description 10
- 239000010410 layer Substances 0.000 description 5
- 238000007781 pre-processing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011049 pearl Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000000438 stratum basale Anatomy 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
A pretreatment device for die steel. The utility model discloses a setting is that the ceramic heating element maintains the mould steel work piece of treating processing on gyro wheel conveyer in first temperature range, from this, can guarantee that mould steel work piece surface crystal property can not change because of the sudden change of temperature. And simultaneously, the utility model discloses still be about to the liquid medium that contains nanometer metal powder to the position spraying that the workpiece surface contacted with the rolling mill through medium nozzle. Therefore, the utility model discloses a mould steel is carrying out rolling in-process, and usable medium avoids the mould steel work piece to form the austenite at rolling deformation in-process, reduces shear stratum thickness.
Description
Technical Field
The utility model relates to a mould steel processing field especially relates to a preprocessing device to mould steel.
Background
Die steels are commonly used to make cold, hot or pressure die castings which have a high hardness and are therefore not easily machinable. During the machining process, the equipment acting on the machine is easy to slip and shift.
In order to facilitate cutting, the prior art often adopts a heat treatment mode to reduce the processing difficulty of die steel. However, the die steel has thermal fatigue characteristics, and the heat treatment, especially the heat treatment quenching temperature, in the processing process can affect the austenite grain size of the cutting surface of the die steel, the solid solubility of alloy elements and the tissue uniformity of the workpiece surface, thereby affecting the overall thermal fatigue performance of the die steel workpiece finished product.
In particular, the temperature of the workpiece is sharply reduced after the workpiece leaves a heat treatment device in the processing process of the existing die steel workpiece, the surface crystal structure of the workpiece is influenced, the crystal structure is changed into an inward thermal deterioration layer, the stress intensity of the workpiece is influenced, and the workpiece in processing is easy to deform and crack.
SUMMERY OF THE UTILITY MODEL
in order to solve the defects existing in the prior art, the utility model aims to provide a pretreatment device for die steel.
First, in order to achieve the above object, there is provided a pretreatment device for die steel, comprising: the heat treatment device is used for carrying out heat treatment on the die steel workpiece to be processed to 250-350 ℃, and outputting the die steel workpiece after the heat treatment; the roller conveyor belt is connected to the output port of the heat treatment device and used for driving the heat-treated die steel workpiece to move to a rear-stage cutting machining device; the roller conveyor belt comprises rollers, bearings and a frame; the inner wall of the roller is uniformly provided with ceramic heating bodies; one end of the roller is connected with one end of a bearing, and the other end of the bearing is connected with a motor for driving the roller to rotate in the frame; the other end of the roller is connected with an electrode connecting cylinder which comprises an inner metal electrode ring and an outer metal electrode ring, the inner metal electrode ring of the inner ring is protruded out of the outer metal electrode ring of the outer ring, the two metal electrode rings are respectively and stably electrically connected with the two electrodes of the ceramic heating body, a first contact piece and a second contact piece which are stably electrically contacted with the two circles of metal electrode rings are respectively arranged in the frame, the first contact piece and the second contact piece are separated by insulating materials, the first contact piece and the second contact piece respectively supply power to two electrodes of the ceramic heating body stably through the two circles of metal electrode rings, after power supply, the ceramic heating body uniformly provides constant temperature in a first temperature range to the outer wall of the roller, so that the heat-treated die steel workpiece is slowly annealed to the first temperature range on the roller conveying belt and the temperature is maintained; the medium nozzle is arranged above the roller conveyor belt and far away from the heat treatment device and used for spraying a liquid medium on the surface of the die steel workpiece annealed to the first temperature range; and the rolling mill is arranged at the rear end of the medium nozzle relative to the moving direction of the die steel workpiece and comprises a horizontal rolling mill and a vertical rolling mill which are alternately arranged, and the distance between the rollers in the rolling mill is 80-90% of the size of the die steel workpiece.
Optionally, in the pretreatment device, the first temperature range is at least 250 ℃.
Optionally, in the pretreatment device, the liquid medium is an oily medium heated to the first temperature range, and metal powder is further mixed in the oily medium, where the metal powder includes any one of or a mixture of nano-scale iron powder, rhenium powder, titanium powder, tungsten powder, manganese powder, chromium powder, and magnesium powder.
Optionally, in the pretreatment device, an angle at which the medium nozzle ejects the liquid medium is an inclined angle of 25 ° to 35 ° with respect to a moving direction of the die steel workpiece.
optionally, in the pretreatment device, the roller conveyor belt is provided with an inclination angle between 10 ° and 20 ° above the horizontal plane; the angle of the liquid medium sprayed out by the medium nozzle is 15 degrees downwards relative to the horizontal plane along the moving direction of the die steel workpiece.
Optionally, in the pretreatment device, the ceramic heating element is an MCH ceramic heating element.
Optionally, in the aforesaid preprocessing device, the below of gyro wheel conveyer belt still is provided with the cell body, the width of cell body is less than the length of gyro wheel and is greater than the size of mould steel work piece, the degree of depth of cell body is higher than the height of two-layer gyro wheel conveyer belt, the side of cell body is provided with the confession the through-hole that the gyro wheel passed, the inboard of cell body still is provided with the reflective coating for the reflection the heat that the ceramic heating body distributed out is in order to keep the temperature of mould steel work piece.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:
Fig. 1 is a schematic view of the overall structure of a pretreatment apparatus for mold steel according to the present invention;
Fig. 2 is a schematic diagram of the connection relationship between the electrode connecting cylinder and the contact plate in the pretreatment device for the die steel.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the following description will clearly and completely describe the technical solution of the embodiments of the present invention by combining the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.
the utility model discloses in the meaning of "preceding, back" be the user just when this device, user's the place ahead is preceding, user's rear is the back.
The utility model discloses in the meaning of "upper and lower" be when the user is just to this device, user's top is last, user's below is down.
Fig. 1 is according to the utility model discloses a preprocessing device to mould steel, it includes:
And the heat treatment device 71 is used for carrying out heat treatment on the die steel workpiece to be processed to 250-350 ℃, and outputting the die steel workpiece after the heat treatment.
The roller conveyor belt 72 is connected to the output port of the heat treatment device 71 and is used for driving the heat-treated die steel workpiece to move to a rear-stage cutting machining device; the roller conveyor 72 includes a roller 73, a bearing 74, and a frame 75; the inner wall of the roller is uniformly provided with ceramic heating bodies; one end of the roller 73 is connected with one end of the bearing 74, and the other end of the bearing 74 is connected with a motor for driving the roller to rotate in the frame 75; the roller conveyor belt is provided with an inclination angle which is higher than the horizontal plane by 10 degrees to 20 degrees, so that the angle of the liquid medium sprayed by the medium nozzle at the later stage is kept within the inclination angle range of 25 degrees to 35 degrees downwards relative to the die steel workpiece along the moving direction of the die steel workpiece, the workpiece can be driven, the spraying area can be increased as much as possible, and the uniformity of metal powder spraying can be improved.
As shown in fig. 2, the other end of the roller 73 is connected with an electrode connecting cylinder 76, which comprises an inner metal electrode ring and an outer metal electrode ring, the inner metal electrode ring protrudes out of the outer metal electrode ring, the two metal electrode rings are respectively and stably and electrically connected with two electrodes of the MCH ceramic heating element, a first contact plate 81 and a second contact plate 82 which are stably and electrically connected with the two metal electrode rings are respectively arranged in the frame 75, the first contact plate and the second contact plate are separated by an insulating material, the first contact plate and the second contact plate respectively and stably supply power to the two electrodes of the ceramic heating element through the two metal electrode rings, after power supply, the ceramic heating element uniformly provides a constant temperature of at least 250 ℃ to the outer wall of the roller, so that the heat-treated die steel workpiece is slowly annealed to a range of at least 250 ℃ on the roller conveying belt 72 and the temperature is maintained.
For guaranteeing the constant temperature effect, the below of gyro wheel conveyer belt still is provided with the cell body, the width of cell body is less than the length of gyro wheel and be greater than the size of mould steel work piece, the degree of depth of cell body is higher than the height of two-layer gyro wheel conveyer belt, the side of cell body is provided with the confession the through-hole that the gyro wheel passed, the inboard of cell body still is provided with reflective coating, is used for the reflection the heat that the ceramic heat-generating body distributed out is in order to keep the temperature of mould steel work piece. The reflective coating is formed by coating a heat-reflecting coating, wherein the heat-reflecting coating comprises 25-35% of alkyd resin, 15-30% of acetone, 15-30% of propylene glycol methyl ether, 15-25% of titanium dioxide, 5-15% of hollow glass beads, 2-5% of expanded pearls, 3-8% of aluminum tyrate fibers and the balance of a leveling agent, a pigment dispersing agent or a sterilization mildew preventive. It utilizes the reflection of hollow glass beads, expanded pearls and alumina-cool fibers to infrared rays to preserve heat of a workpiece.
The medium nozzle 77 is arranged above the roller conveyor belt 72 and away from the heat treatment device 71, and is used for spraying liquid medium on the surface of the die steel workpiece annealed to the first temperature range; the liquid medium is an oily medium heated to a first temperature range, and metal powder is further mixed in the oily medium, wherein the metal powder comprises any one of or a mixture of nano-scale iron powder, rhenium powder, titanium powder, tungsten powder, manganese powder, chromium powder and magnesium powder.
the rolling mill 78, which is disposed at the rear end of the media nozzle 77 with respect to the moving direction of the die steel workpiece, includes horizontal direction rolling mills and vertical direction rolling mills alternately disposed, and the interval between the rolls in the rolling mill is between 80% and 90% of the size of the die steel workpiece.
therefore, the device can realize the following pretreatment steps, and further ensure the surface strength of the workpiece during processing.
Firstly, heat-treating a die steel workpiece to be processed to 250-350 ℃, and outputting the heat-treated die steel workpiece.
Then, ceramic heating elements are arranged on the upper surface and the lower surface of the output die steel workpiece, the temperature emitted by the ceramic heating elements keeps the temperature of the die steel workpiece at 250 ℃ or above, so that the die steel workpiece is annealed slowly, and the annealing rate is not more than 30 ℃ per hour.
Subsequently, spraying a liquid medium on the surface of the die steel workpiece before rolling; the liquid medium is an oily medium heated to 250 ℃, and metal powder is further mixed in the oily medium, wherein the metal powder comprises any one of or a mixture of nano-scale iron powder, rhenium powder, titanium powder, tungsten powder, manganese powder, chromium powder and magnesium powder.
And finally, carrying out rolling treatment in the horizontal direction and rolling treatment in the vertical direction on the die steel workpiece, wherein in the rolling treatment process, the distance between rollers of the rolling mill is 80-90% of the size of the die steel workpiece. The carbon on the surface of the workpiece pretreated by the method is rolled and separated out, the nano powder of iron, rhenium, titanium, tungsten, manganese, chromium, magnesium and the like acts with a metal bond electrode on the surface of the die steel, a new compact protective layer is formed on the rolled surface, and the protective layer is fused into the surface of an austenite or metamorphic layer formed on the surface of the die steel workpiece through the rolling process. The utility model discloses the austenite on mould steel workpiece surface after the preliminary treatment or the physical properties on metamorphic layer change, and very big improvement workpiece surface's hardness and fragility make its non-deformable fracture, change in processing.
The utility model discloses a setting is that the ceramic heating element maintains the mould steel work piece of treating processing on gyro wheel conveyer in first temperature range, from this, can guarantee that mould steel work piece surface crystal property can not change because of the sudden change of temperature. And simultaneously, the utility model discloses still be about to the liquid medium that contains nanometer metal powder to the position spraying that the workpiece surface contacted with the rolling mill through medium nozzle. Therefore, the utility model discloses a mould steel is carrying out rolling in-process, and usable medium avoids the mould steel work piece to form the austenite at rolling deformation in-process, reduces shear stratum basale thickness, is favorable to follow-up processing.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A pretreatment device for die steel, characterized by comprising:
The heat treatment device (71) is used for carrying out heat treatment on the die steel workpiece to be processed to 250-350 ℃, and outputting the die steel workpiece after the heat treatment;
The roller conveyor belt (72) is connected to the output port of the heat treatment device (71) and is used for driving the heat-treated die steel workpiece to move to a rear-stage cutting machining device; the roller conveyor belt (72) comprises rollers (73), bearings (74) and a frame (75); the inner wall of the roller is uniformly provided with ceramic heating bodies; one end of the roller (73) is connected with one end of a bearing (74), and the other end of the bearing (74) is connected with a motor for driving the roller to rotate in the frame (75); the other end of the roller (73) is connected with an electrode connecting cylinder (76) which comprises an inner metal electrode ring and an outer metal electrode ring, the inner metal electrode ring of the inner ring is protruded out of the outer metal electrode ring, the two metal electrode rings are respectively and stably electrically connected with the two electrodes of the ceramic heating body, a first contact piece (81) and a second contact piece (82) which are stably electrically contacted with the two circles of metal electrode rings are respectively arranged in the frame (75), the first contact piece and the second contact piece are separated by insulating materials, the first contact piece and the second contact piece respectively supply power to two electrodes of the ceramic heating body stably through the two circles of metal electrode rings, after power supply, the ceramic heating body uniformly provides constant temperature in a first temperature range to the outer wall of the roller, so that the heat-treated die steel workpiece is slowly annealed to the first temperature range on the roller conveying belt (72) and the temperature is maintained;
The medium nozzle (77) is arranged above the roller conveyor belt (72) and is far away from the heat treatment device (71) and is used for spraying liquid medium on the surface of the die steel workpiece annealed to the first temperature range;
A rolling mill (78) disposed at a rear end of the media nozzle (77) with respect to a moving direction of the die steel workpiece, including horizontally oriented rolling mills and vertically oriented rolling mills alternately disposed, a pitch between the rolling rolls in the rolling mill being between 80% and 90% of a size of the die steel workpiece.
2. The pretreatment apparatus for mold steel according to claim 1, wherein the first temperature range is at least up to 250 ℃.
3. The pretreatment apparatus for die steel according to claim 1, wherein the liquid medium is an oily medium heated to the first temperature range, and metal powder is further mixed in the oily medium, and the metal powder comprises any one of nano-scale iron powder, rhenium powder, titanium powder, tungsten powder, manganese powder, chromium powder and magnesium powder or a mixture thereof.
4. Pretreatment device for mold steel according to claim 2, characterized in that the roller conveyor (72) is provided with an inclination angle between 10 ° and 20 ° above the horizontal plane;
The angle of the liquid medium sprayed out of the medium nozzle (77) is 15 degrees downward relative to the horizontal plane along the moving direction of the die steel workpiece.
5. The pretreatment device for mold steel according to claim 2, wherein the angle at which the medium nozzle (77) ejects the liquid medium is an inclined angle of between 25 ° and 35 ° with respect to the moving direction of the mold steel workpiece.
6. The pretreatment apparatus for mold steel according to claim 2, wherein the ceramic heater is an MCH ceramic heater.
7. The pretreatment device for the die steel according to claim 1, wherein a groove body (79) is further arranged below the roller conveyor belt (72), the width of the groove body (79) is smaller than the length of the roller (73) and larger than the size of the die steel workpiece, the depth of the groove body (79) is higher than the height of the two layers of roller conveyor belts, a through hole for the roller (73) to pass through is formed in the side surface of the groove body (79), and a reflective coating is further arranged on the inner side of the groove body (79) and used for reflecting heat emitted by the ceramic heating body so as to keep the temperature of the die steel workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822241696.3U CN209792271U (en) | 2018-12-28 | 2018-12-28 | pretreatment device for die steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822241696.3U CN209792271U (en) | 2018-12-28 | 2018-12-28 | pretreatment device for die steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209792271U true CN209792271U (en) | 2019-12-17 |
Family
ID=68819178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822241696.3U Withdrawn - After Issue CN209792271U (en) | 2018-12-28 | 2018-12-28 | pretreatment device for die steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209792271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530462A (en) * | 2018-12-28 | 2019-03-29 | 太仓新思成模具钢有限公司 | For the pretreatment unit and preprocess method of mould steel |
-
2018
- 2018-12-28 CN CN201822241696.3U patent/CN209792271U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530462A (en) * | 2018-12-28 | 2019-03-29 | 太仓新思成模具钢有限公司 | For the pretreatment unit and preprocess method of mould steel |
| CN109530462B (en) * | 2018-12-28 | 2023-12-22 | 太仓成和信精密科技有限公司 | Pretreatment device and pretreatment method for die steel |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191219 Address after: 215436 building 3, group 2, tianbang village, Liuhe Town, Taicang City, Suzhou City, Jiangsu Province Patentee after: Taicang chenghexin Precision Technology Co.,Ltd. Address before: 215431 1688 Xinyi West Road, Xintang District, Liuhe Town, Taicang City, Suzhou City, Jiangsu Province Patentee before: TAICANG XINSICHENG MOULD STEEL Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191217 Effective date of abandoning: 20231222 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191217 Effective date of abandoning: 20231222 |