CN102051537B - Damp white iron material and preparation method thereof - Google Patents
Damp white iron material and preparation method thereof Download PDFInfo
- Publication number
- CN102051537B CN102051537B CN2011100070462A CN201110007046A CN102051537B CN 102051537 B CN102051537 B CN 102051537B CN 2011100070462 A CN2011100070462 A CN 2011100070462A CN 201110007046 A CN201110007046 A CN 201110007046A CN 102051537 B CN102051537 B CN 102051537B
- Authority
- CN
- China
- Prior art keywords
- steel wire
- thomel
- wire group
- damping
- group
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Heat Treatment Of Steel (AREA)
- Inorganic Fibers (AREA)
Abstract
The invention discloses a damp white iron material and a preparation method thereof. The material takes damp white iron as a substrate; a steel wire cluster and carbon fiber are distributed in the substrate; the diameter of the steel wire cluster is 10-15cm, the section of the steel wire is rectangular, and the standard of the section is (0.1-0.4mm)*(0.5-1.5mm); and the weight ratio of the steel wire to the carbon fiber is (25-30):1, and the steel wire and carbon fiber account for 20-40% of material by volume percent. The damp white iron material prepared by the method has the advantages of high toughness, simple process and low cost.
Description
Technical field
The invention belongs to metal material field, relate to a kind of damping white pig iron material, be specifically related to a kind of steel wire group and the compound enhanced damping of thomel white pig iron material and preparation method thereof of containing.
Background technology
In metal material field, damping white pig iron receives generally as low-cost high-abrasive material always and paying attention to.
CN200810243269.7 number application discloses a kind of low-alloy chilled cast iron; Its chemical ingredients is: carbon 3.5～3.8%, and silicon 1.5～1.9%, manganese are greater than 0, smaller or equal to 1.0%; Phosphorus is less than 0.05%; Sulphur is less than 0.02%, and chromium is greater than 0, smaller or equal to 1.0%, and surplus is an iron and inevitable micro impurity element; Unit is a weight percentage.
CN201010158988.6 number application discloses a kind of high-tenacity wear-resistant white iron, and its chemical ingredients is (weight percent): C:2.0～4.0%, Si:1.0～2.5%; Mn:0.2～0.8%, Cr:1.0～15.0%, Ni:2.0～8.0%; Mo:0.1～0.4%, Dy:0.1～0.2%, Y:0.1～0.2%; S and P≤0.06%, all the other are Fe.This application also discloses the preparation method of above-mentioned high-tenacity wear-resistant white iron.This invention is through adding Zr and Y element in white pig iron; The oxide particle disperse that makes Dy and Y element becomes the core of carbon cpd forming core in matrix, thereby reaches the purpose of refinement carbide; And the carbide network at crystal boundary place is eliminated, and α k reaches 10J/cm
2About, can also keep the hardness of common white pig iron, HRC reaches more than 60.
But white pig iron mainly is made up of cementite, though cementite is hard crisp.Play the refinement carbide although take to add rare earth, yet also be limited the toughness that improves material.
CN93103016.1 invention high-damping cast iron adopts common smelting process; Be cast into the strand of pipe, rod and different shape, in the cast iron of carbon equivalent ce=C%+1/3 (Si%)=4.5～5.2%, add 0.001～0.100% yttrium; Make it to have high damping; Cost is low, can be used as structural material applications on electronic product, reaches the vibration and noise reducing sound effective value.But this material wear ability is not enough, can not possess higher wear-resisting and damping capacity simultaneously.
Summary of the invention
The object of the invention is exactly to above-mentioned technological deficiency, and a kind of steel wire group and the compound enhanced damping of thomel white pig iron material of containing is provided.
Another object of the present invention provides a kind of steel wire group and the compound enhanced damping of thomel white pig iron preparation methods of containing.
The objective of the invention is to realize through following technical scheme:
A kind of damping white pig iron material, this material is a matrix with damping white pig iron, the steel wire that in matrix, distributing group and thomel; It is 10～15cm that said steel wire is rolled into a ball diameter, and used section of steel wire is a rectangle, and the cross section specification is 0.1～0.4mm * 0.5～1.5mm; The weight ratio of said steel wire and thomel is 25～30:1, and the volume percent that steel wire and thomel account for material altogether is 20-40%;
The following chemical components in percentage by weight of damping white pig iron matrix is: C is 2.4～2.7%, and Si is 1.4～1.9%, and Mn is 0.5～0.7%, and < 0.08%, < 0.25%, all the other are Fe to S to P;
The following chemical components in percentage by weight of steel wire is: C is 0.6～0.7%, and Si is 0.2～0.3%, and Mn is 0.3～0.8%, and < 0.02%, < 0.025%, all the other are Fe to S to P;
Thomel is T300, and diameter is 7 microns, and length-to-diameter ratio is 100-500:1.
Also be distributed with Mn in the above-mentioned matrix
4B, Fe
3B and B
4The C particle.
A kind of damping white pig iron preparation methods, it may further comprise the steps:
The preparation of boronising steel wire group and thomel: getting the cross section specification is that 0.1～0.4mm * 0.5～1.5mm, composition are that C is 0.6～0.7%; Si is 0.2～0.3%; Mn is 0.3～0.8%, and < 0.02%, S < 0.025% for P; All the other are the steel wire of Fe, and diameter is the T300 thomel that 7 microns length-to-diameter ratios are 100～500:1; The weight ratio of said steel wire and thomel is 25～30:1; The volume percent that steel wire and thomel account for material altogether is 20～40%; Get the ordinary method preparation cleaning globular steel wire group that steel wire is produced by cleaning ball, the diameter of steel wire group is 10～15cm, and obtains boronising steel wire group by the conventional chemical heat-treating methods at its surface boronizing; The thickness of said boride layer is 50-100 μ m;
Boronising steel wire group adheres to the preparation of thomel: water glass solution is immersed in group with the boronising steel wire, and the concentration of water glass solution is 1.3～1.5g/cm
3, modulus is 2.6～3.0; Steel wire group is taken out from water glass solution, and then thomel rubbed spread in the steel wire group that has water glass solution, make thomel evenly be bonded at the surface of steel wire; After treating that water glass solidifies, the steel wire group of some adhesion thomels is put into the casting mold die cavity; The tightness of steel wire group accounts for the volume percent decision of material altogether by steel wire group and thomel, and guarantees that steel wire group just in time piles casting mold; Mo(u)ld top half with casting mold is placed on the mo(u)ld bottom half then, waits for molten iron pouring after mould assembling finishes;
The preparation of damping white pig iron matrix: percentage composition C is 2.4～2.7% by weight, and Si is 1.4～1.9%, and Mn is 0.5～0.7%, and < 0.08%, < 0.25%, all the other prepare burden for Fe S P; Damping white pig iron matrix melted in induction furnace obtain damping spoken parts in traditional operas molten iron, temperature of fusion is 1420～1450 ℃;
Above-mentioned damping spoken parts in traditional operas molten iron is poured in the casting mold that the steel wire group that adheres to thomel is housed; Liquid molten iron gets into steel wire group gap thomel and steel wire is surrounded; Cooled and solidified then, form with damping white pig iron be matrix wherein be distributed with the material that thomel and steel wire are rolled into a ball.
It is following that the present invention compares the beneficial effect of prior art:
(1) steel wire in the material of the present invention and thomel self have suitable intensity and high toughness, and the matrix of steel wire and white pig iron all is an iron, so steel wire and white pig iron matrix be easy to combine, and form good metallurgical binding.Like this, steel wire is distributed in the white pig iron, and material is had good enhancing toughening effect.
(2) be distributed with thomel in the material of the present invention, thomel not only has antifriction function, and with the steel wire acting in conjunction, therefore the toughness of strongthener and intensity help the alloy wear-resisting performance and improve.
(3) in the moulding process of material, when getting into the casting mold die cavity, molten iron contacts with steel wire, and the B of Steel Wire Surface is fused to molten iron, and the B reaction of the Mn in the molten iron, C and Fe and Steel Wire Surface forms Mn
4B, Fe
3B, B
4C, the disperse compound of formation is distributed in the matrix, makes that the hardness of material is high, thereby improves the wear resisting property of material.
(4) contain the steel wire of hard in the damping white pig iron material in the material, contain the boride of disperse simultaneously in the alloy, so hardness is high, has the good wear resistance ability.
(5) section of steel wire in the while material is a rectangle, and contains tiny thomel, so the alloy median surface is many, and surface-area is big, makes material have good damping vibration attenuation performance; And it is spherical in shape that steel wire is processed steel wire group, the thomel uniform distribution in material that is beneficial to steel wire and adheres on it.
(6) material of the present invention is without noble element, and main alloy element is brought into by steel wire, and the wire material cost is low, and the cost of thomel is also low, and preparation technology is easy, and the alloy material performance of production is good, and is convenient to very much suitability for industrialized production.The material of preparation is mainly used in the wear-resisting consumable accessory that industrial circles such as mine, coal, building materials are used, like shell liner, aside-liner etc.
(7) P, S are impurity in the material of the present invention, are controlled at the scope of permission.
Material property of the present invention is seen table 1.
Description of drawings
The metallographic structure that contains steel wire group and the compound enhanced damping of thomel white pig iron material that Fig. 1 makes for the embodiment of the invention one.
Fig. 1 can see at damping white pig iron and combining well with steel wire.
Embodiment
Below each embodiment only with of the present invention the explaining of opposing, weight percent wherein all can change weight g, kg or other weight unit into.Steel wire among each embodiment and thomel are commercial, and boride layer is self-control.
Embodiment one
The following chemical components in percentage by weight of damping white pig iron matrix: C is 2.4%, and Si is 1.4%, and Mn is 0.5%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The following chemical components in percentage by weight of steel wire is: C is 0.6%, and Si is 0.2%, and Mn is 0.3%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The cross section of steel wire is a rectangle, and specification is 0.1mm * 0.5mm.
Thomel is T300, and diameter is 7 microns, and length-to-diameter ratio is 100:1.
The weight ratio of steel wire and thomel is 25:1, and the volume percent that control steel wire and thomel account for material altogether is 20%.
Get the steel wire group of steel wire according to the ordinary method formation cleaning ball shape of cleaning ball or steel wire lump production, the diameter of steel wire group is 10cm, and obtains boronising steel wire group by the conventional chemical heat-treating methods at its surface boronizing, and the thickness of said boride layer is 50 μ m.
The preparation process is following: water glass solution is immersed in group with the boronising steel wire, and the concentration of said water glass solution is 1.3 g/cm
3, modulus is 2.6; Steel wire group is taken out from water glass solution, and then thomel rubbed spread in the steel wire group that has water glass solution, make thomel evenly be bonded at the surface of steel wire; After treating that water glass solidifies, some steel wire groups that are stained with thomel are put into the casting mold die cavity; The tightness of steel wire group accounts for the volume percent decision of material by steel wire and thomel, and guarantees that steel wire group just in time piles casting mold; Mo(u)ld top half with casting mold is placed on the mo(u)ld bottom half then, waits for molten iron pouring after mould assembling finishes;
Damping white pig iron matrix melted in induction furnace obtain damping spoken parts in traditional operas molten iron, temperature of fusion is 1430～1440 ℃;
Above-mentioned damping spoken parts in traditional operas molten iron is poured in the casting mold that the steel wire group that is stained with thomel is housed; Liquid molten iron gets into steel wire group gap thomel and steel wire is surrounded; Cooled and solidified then, form with damping white pig iron be matrix wherein be distributed with the material that thomel and steel wire are rolled into a ball.
Embodiment two
The following chemical components in percentage by weight of damping white pig iron matrix: C is 2.7%, and Si is 1.9%, and Mn is 0.7%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The following chemical components in percentage by weight of steel wire is: C is 0.7%, and Si is 0.3%, and Mn is 0.8%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The cross section of steel wire is a rectangle, and specification is 0.4mm * 1.5mm.
Thomel is T300, and diameter is 7 microns, and length-to-diameter ratio is 500:1.
The weight ratio of steel wire and thomel is 30:1, and the volume percent that control steel wire and thomel account for material altogether is 40%.
Get the steel wire group of steel wire according to the ordinary method formation cleaning ball shape of cleaning ball production, the diameter of steel wire group is 15cm, and obtains boronising steel wire group by the conventional chemical heat-treating methods at its surface boronizing, and the thickness of said boride layer is 100 μ m.
The preparation process is with embodiment one, and wherein the concentration of water glass solution is 1.5 g/cm
3, modulus is 3.0.
Embodiment three
The following chemical components in percentage by weight of damping white pig iron matrix: C is 2.6%, and Si is 1.6%, and Mn is 0.6%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The following chemical components in percentage by weight of steel wire is: C is 0.65%, and Si is 0.25%, and Mn is 0.5%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The cross section of steel wire is a rectangle, and specification is 0.3mm * 0.7mm.
Thomel is T300, and diameter is 7 microns, and length-to-diameter ratio is 190:1.
The weight ratio of steel wire and thomel is 27:1, and the volume percent that control steel wire and thomel account for material altogether is 35%.
Get the steel wire group of steel wire according to the ordinary method formation cleaning ball shape of cleaning ball production, the diameter of steel wire group is 12cm, and obtains boronising steel wire group by the conventional chemical heat-treating methods at its surface boronizing, and the thickness of said boride layer is 70 μ m.
The preparation process is with embodiment one, and wherein the concentration of water glass solution is 1.4 g/cm
3, modulus is 2.8.
The comparative example four
The following chemical components in percentage by weight of damping white pig iron matrix: C is 2%, and Si is 1%, and Mn is 0.4%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The following chemical components in percentage by weight of steel wire is: C is that 0. 3%, Si is 0.1%, and Mn is 0.2%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The cross section of steel wire is circular, and radius is 0.1mm.
Thomel is T300, and diameter is 7 microns, and length-to-diameter ratio is 50:1.
The weight ratio of steel wire and thomel is 25:1, and the volume percent that control steel wire and thomel account for material altogether is 10%.
Get the steel wire group of steel wire according to the ordinary method formation cleaning ball shape of cleaning ball production, the diameter of steel wire group is 10cm, and the not boronising of surface of steel wire group.
The preparation process is with embodiment one.
The comparative example five
The following chemical components in percentage by weight of damping white pig iron matrix: C is 2.8%, and Si is 2%, and Mn is 0.8%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The following chemical components in percentage by weight of steel wire is: C is 0.9%, and Si is 0.4%, and Mn is 0.9%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The cross section of steel wire is a rectangle, and specification is 0.5mm * 2mm.
Thomel is T300, and diameter is 7 microns, and length-to-diameter ratio is 600:1.
The weight ratio of steel wire and thomel is 25:1, and the volume percent that control steel wire and thomel account for material altogether is 60%.
Get the steel wire group of steel wire according to the ordinary method formation cleaning ball shape of cleaning ball production, the diameter of steel wire group is 10cm, and obtains boronising steel wire group by the conventional chemical heat-treating methods at its surface boronizing, and the thickness of said boride layer is 200 μ m.
The preparation process is with embodiment one.
Product performance are analyzed:
Visible by following table, white pig iron matrix in the material of the present invention and the C in the steel wire chemical ingredients, Si, Mn increase, and are beneficial to the raising of material hardness.But too much, can reduce the toughness of body material.P and S increase, and also can reduce the toughness of body material.
Section of steel wire is that rectangle is convenient to the bonded carbon fiber.Sectional dimension is too small, is unfavorable for the bonded carbon fiber; Otherwise oversize, isolating the matrix tendency increases.
The thomel length-to-diameter ratio too little with the bonding that too mostly is unfavorable for parallel wire.
The increase of steel wire and thomel volume per-cent is beneficial to the raising of toughness of material.But volume percent is excessive, then can reduce the hardness of material, has therefore also reduced the wear resistance of material, and like product 5, and molten iron is difficult for surrounding steel wire and thomel; Otherwise the volume percent that steel wire and thomel account for material is too little, then is unfavorable for the performance of steel wire and carbon fibre acts.
The thickness of Steel Wire Surface boride layer increases, and is beneficial to the alloying of molten iron; But thickness is excessive, and boron is difficult for fusing into molten iron in short-term, causes the waste of element, and the cost of thermal treatment simultaneously increases; Otherwise the thickness of the boride layer of Steel Wire Surface is too little, and steel wire hardness reduces, and is unfavorable for forming the compound of disperse.
Each the product performance contrast of table 1 gained
Claims (1)
1. damping white pig iron preparation methods, it is characterized in that: it may further comprise the steps:
The preparation of boronising steel wire and thomel: getting the cross section specification is that 0.1～0.4mm * 0.5～1.5mm, composition are that C is 0.6～0.7%; Si is 0.2～0.3%; Mn is 0.3～0.8%, and < 0.02%, S < 0.025% for P; All the other are the steel wire of Fe, and diameter is the T300 thomel that 7 microns length-to-diameter ratios are 100～500:1; The weight ratio of said steel wire and thomel is 25～30:1; The volume percent that steel wire and thomel account for material altogether is 20～40%; Get the ordinary method preparation cleaning globular steel wire group that steel wire is produced by cleaning ball, the diameter of steel wire group is 10～15cm, and obtains boronising steel wire group by the conventional chemical heat-treating methods at its surface boronizing; The thickness of said boride layer is 50-100 μ m;
Boronising steel wire group adheres to the preparation of thomel: water glass solution is immersed in group with the boronising steel wire, and the concentration of water glass solution is 1.3～1.5g/cm
3, modulus is 2.6～3.0; Steel wire group is taken out from water glass solution, and then thomel rubbed spread in the steel wire group that has water glass solution, make thomel evenly be bonded at the surface of steel wire; After treating that water glass solidifies, the steel wire group of some adhesion thomels is put into the casting mold die cavity; The tightness of steel wire group accounts for the volume percent decision of material altogether by steel wire group and thomel, and guarantees that steel wire group just in time piles casting mold; Mo(u)ld top half with casting mold is placed on the mo(u)ld bottom half then, waits for molten iron pouring after mould assembling finishes;
The preparation of damping white pig iron matrix: percentage composition C is 2.4～2.7% by weight, and Si is 1.4～1.9%, and Mn is 0.5～0.7%, and < 0.08%, < 0.25%, all the other prepare burden for Fe S P; Damping white pig iron matrix melted in induction furnace obtain damping spoken parts in traditional operas molten iron, temperature of fusion is 1420～1450 ℃;
Above-mentioned damping spoken parts in traditional operas molten iron is poured in the casting mold that the steel wire group that adheres to thomel is housed; Liquid molten iron gets into steel wire group gap thomel and steel wire is surrounded; Cooled and solidified then, form with damping white pig iron be matrix wherein be distributed with the material that thomel and steel wire are rolled into a ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100070462A CN102051537B (en) | 2011-01-14 | 2011-01-14 | Damp white iron material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100070462A CN102051537B (en) | 2011-01-14 | 2011-01-14 | Damp white iron material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102051537A CN102051537A (en) | 2011-05-11 |
| CN102051537B true CN102051537B (en) | 2012-08-22 |
Family
ID=43956329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100070462A Expired - Fee Related CN102051537B (en) | 2011-01-14 | 2011-01-14 | Damp white iron material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102051537B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107488821A (en) * | 2017-09-15 | 2017-12-19 | 安徽红桥金属制造有限公司 | A kind of oil seal spring and its production technology with high-yield strength |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5219530B2 (en) * | 1972-09-12 | 1977-05-28 | ||
| JPH01252741A (en) * | 1988-04-01 | 1989-10-09 | Ube Ind Ltd | Fiber-reinforced composite material |
| CN101314839B (en) * | 2008-06-13 | 2010-04-21 | 哈尔滨工业大学 | Reinforcement method for continuous filament reinforced metallic matrix composite |
| CN101705444A (en) * | 2009-11-09 | 2010-05-12 | 西安建筑科技大学 | Preparation process of high manganese steel based composite material |
-
2011
- 2011-01-14 CN CN2011100070462A patent/CN102051537B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102051537A (en) | 2011-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102962423A (en) | Centrifugal high-carbon, high-boron and high-speed steel composite roller shell and fabrication method of combined roller of composite roller shell | |
| CN103526125A (en) | Semi-steel roll and manufacturing method thereof | |
| CN102051537B (en) | Damp white iron material and preparation method thereof | |
| CN102051536B (en) | Damping wear-resistant steel material and preparation method thereof | |
| CN102051535B (en) | Damping abrasion resistant magnesium alloy material and preparation method thereof | |
| CN102051558B (en) | Wear resistant damping tinplate material and preparation method thereof | |
| CN102051540B (en) | Wear resistant zinc alloy material and preparation method thereof | |
| CN102051550B (en) | Damping wear-resistant zinc alloy material and preparation method thereof | |
| CN102181810B (en) | Antifriction vermicular cast iron material and preparation method | |
| CN102051554B (en) | Damping wear-resistant aluminum alloy material and preparation method thereof | |
| CN102051534B (en) | Damping wear-resistant copper alloy material and preparation method thereof | |
| CN102051556A (en) | Wear-resistant aluminium alloy material and preparation method thereof | |
| CN104878281A (en) | Spheroidal graphite cast iron material for hydraulic spanner piston and preparation method of spheroidal graphite cast iron material | |
| CN102051542B (en) | Wear-resistant white cast iron material and preparation method thereof | |
| CN102051548B (en) | Corrosion-resistant malleable nodular cast iron material preparation method | |
| CN102051545B (en) | Wear-resistant and heat-resistant mottled cast iron material and preparation method thereof | |
| CN102071381B (en) | Heat-resistance grey cast iron material and preparation method | |
| CN102071371B (en) | Heat resistant and corrosion resistant vermicular cast iron material and preparation method thereof | |
| CN102051543B (en) | Wearable magnesium alloy material and preparation method thereof | |
| CN103757564A (en) | Cast alloy iron bainite piston ring and production technology thereof | |
| CN102071379B (en) | High-strength gray cast iron material and preparation method thereof | |
| CN102071382B (en) | Corrosion-resistant white cast iron material and preparation method thereof | |
| CN102071377B (en) | Abrasion resistant malleable cast iron material and preparation method thereof | |
| CN102051559A (en) | Wearable grey cast iron material and preparation method thereof | |
| CN102051539A (en) | Heat-resistant magnesium alloy material and preparation method thereof |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 214135 Jiangsu city of Wuxi province innovation building No. 97 Wuxi district two Linghu Avenue South Building Room 101 Patentee after: Nanjing University of Information Science and Technology Address before: 210044 Nanjing City, Pukou Province, Nanjing Road, No. 219, No. six, No. Patentee before: Nanjing University of Information Science and Technology |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151030 Address after: 211600 No. 13, health Road, Jinhu County, Jiangsu, Huaian Patentee after: Jinhu Zhongbo IOT Technology Co., Ltd. Address before: 214135 Jiangsu city of Wuxi province innovation building No. 97 Wuxi district two Linghu Avenue South Building Room 101 Patentee before: Nanjing University of Information Science and Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20180114 |