CN104493145B - New induction furnace and new induction furnace casting mould - Google Patents

New induction furnace and new induction furnace casting mould Download PDF

Info

Publication number
CN104493145B
CN104493145B CN201410752491.5A CN201410752491A CN104493145B CN 104493145 B CN104493145 B CN 104493145B CN 201410752491 A CN201410752491 A CN 201410752491A CN 104493145 B CN104493145 B CN 104493145B
Authority
CN
China
Prior art keywords
mould
housing
shell
induction furnace
seal casinghousing
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
Application number
CN201410752491.5A
Other languages
Chinese (zh)
Other versions
CN104493145A (en
Inventor
韩太栋
孙宏伟
杨晓辉
潘立波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weifang Yili Precision Casting Co ltd
Original Assignee
Weifang Yili Precision Casting Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weifang Yili Precision Casting Co ltd filed Critical Weifang Yili Precision Casting Co ltd
Priority to CN201410752491.5A priority Critical patent/CN104493145B/en
Publication of CN104493145A publication Critical patent/CN104493145A/en
Application granted granted Critical
Publication of CN104493145B publication Critical patent/CN104493145B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00Equipment for conveying molten metal into beds or moulds
    • B22D35/06Heating or cooling equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00Equipment for conveying molten metal into beds or moulds
    • B22D35/04Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The invention discloses a kind of new induction furnace and new induction furnace casting mould, new induction furnace includes being provided with seal casinghousing in frame, frame, and the inner chamber of seal casinghousing is connected with vacuum extractor;Also include heating shell, heating shell is sealedly connected on seal casinghousing;Also include electromagnetic heater, electromagnetic heater includes induction coil, and induction coil is wrapped in outside heating shell;Casting mould includes part mould, and the top of part mould is connected with the heated mould that metal is cast positioned at the splendid attire heated in shell;Induction coil is wrapped in outside heating shell, heated to being cast metal, it is cast after metal melt and enters part mold cavity under gravity, eliminates cumbersome turndown device and complicated sealing device is greatly reduced the volume of vacuum chamber, shorten the time vacuumized;It is cast after metal melt from the bottom stamp of heated mould and enters part mold cavity so that the bits for being cast metallic solution surface cannot be introduced into part mould, it is ensured that product quality.

Description

New induction furnace and new induction furnace casting mould
Technical field
The present invention relates to a kind of induction furnace, a kind of casting mould is further related to.
Background technology
Induction furnace includes body of heater mostly in the prior art, and body of heater is provided with sealing bell, in the course of the work vacuum means Put and body of heater inner chamber carried out to vacuumize crucible is installed in operation, body of heater, crucible is externally provided with magnet coil, by crucible by steel ingot After thawing, operate crucible upset so as to which the steel ingot after fusing is poured into mould from top by turndown device, this is easy for causing The bits of steel ingot molten surface, which are entered in mould, and body of heater, to be needed to place crucible, turndown device and electromagnetic induction coil Deng, cause the volume of body of heater larger, it is necessary to vacuum chamber volume it is larger, the pumpdown time is longer, and turndown device need Artificial operation, and turndown operation needs to carry out under vacuum conditions, therefore be also required to set sealing between turndown device and body of heater Device, when turndown is operated, after operation handle and sealing device long duration of action, is easily caused sealing device sealing effectiveness drop It is low, product defects is easily caused, and high is required to artificial operation, the yield rate of product is relatively low.
The content of the invention
A technical problem to be solved by this invention, which is to provide one kind, can greatly improve production efficiency, and power consumption is notable Reduction, yield rate are high, can effectively improve the utilization rate of raw material, reduce spillage of material, effectively reduce production cost, and automatically The high new induction furnace of chemical conversion degree.
In order to solve the above technical problems, the technical scheme is that:In new induction furnace, including frame, the frame Seal casinghousing is installed, the inner chamber of the seal casinghousing is connected with vacuum extractor;Also include heating shell, the heating shell sealing It is connected on the seal casinghousing, the inner chamber of the heating shell and the intracavity inter-connection of the seal casinghousing, the seal casinghousing Including the first housing and the second housing, sealing device and closing device are provided between first housing and second housing; Also include electromagnetic heater, the electromagnetic heater includes induction coil, and the induction coil is wrapped in the heating shell Outside;Also include being arranged on casting mould in the seal casinghousing, the casting mould includes part mould, the part mould it is upper The splendid attire that portion is connected with the heating shell is cast the heated mould of metal, and the heated mould is provided with charging aperture, described The inner chamber of heated mould and the intracavity inter-connection of the part mould.
As preferred technical scheme, the heating shell is quartz glass shell.
As preferred technical scheme, the first shell body is located at the top of the second housing, and the sealing device includes setting Sealing gasket between first housing and second housing.
As preferred technical scheme, a diameter of 130mm of the induction coil, the induction coil has been directly connected to electricity Hold, the electromagnetic heater includes heating control apparatus, the heating control apparatus includes IGBT module.
As preferred technical scheme, the closing device includes the lifting seat installed in second housing lower surface, Lifting drive is provided between the lifting seat and the frame.
As preferred technical scheme, the lifting drive includes lift cylinder, the piston rod of the lift cylinder Upper end be provided with guide holder, the guide holder multiple pilot holes be installed, the lower surface of the lifting seat is provided with being enclosed on institute State and support spring is set with outside the guide rod in pilot hole, the guide rod, the upper end of the support spring is resisted against the liter The lower surface of seat drops, and the lower end of the support spring is resisted against the upper surface of the guide holder, and second housing is arranged on institute State on lifting seat.
As preferred technical scheme, in addition to cooling device, the cooling device is external including being enclosed on the first shell The first cooling tube and the second cooling tube for being cooled down to second housing.
As preferred technical scheme, casting die lifting seat, the casting die lifting seat are installed in the second shell body Including pedestal, lowering or hoisting gear is provided between the pedestal and second housing.
Be put into by adopting the above-described technical solution, metal will be cast when using in heated mould, by sealing device and Closing device causes the first housing and the second housing tight close, starts vacuum extractor, and vacuum extractor is to the first housing, the After the inner chamber of two housings and heating shell is vacuumized, start electromagnetic heater, electromagnetic heater work will be cast metal and melt Change, be cast after metal melt from the bottom stamp of heated mould and enter part mold cavity so that be cast molten metal surface Bits cannot be introduced into part mould, it is ensured that product quality, and induction coil is wrapped in outside the heating shell, to being cast metal Heated, be cast after metal melt under gravity enter part mold cavity, eliminate cumbersome turndown device and Complicated sealing device is greatly reduced the volume of vacuum chamber, shortens the time vacuumized.And the heating shell is milk Mouth shape, further reduces the volume of vacuum chamber.The lifting drive includes support spring, the upper end of support spring against In the lower surface of the lifting seat, the lower end of support spring is resisted against the upper surface of the guide holder, realizes to the first housing Casting die lifting seat is installed in the buffering closed between second housing, the second shell body, to adapt to different castings The height of modeling tool.
Another technical problem to be solved by this invention be to provide one kind can be prevented effectively from when being cast be cast metal melt The bits on liquid surface enter mould, it is ensured that the new induction furnace casting mould of product quality.
In order to solve the above technical problems, the technical scheme is that:New induction furnace casting mould, including part Mould, the top of the part mould is connected with the heated mould for containing and being cast metal, and the heated mould is provided with charging aperture, described to add The inner chamber of hot-die and the intracavity inter-connection of the part mould.
By adopting the above-described technical solution, new induction furnace casting mould, including part mould, the part mould it is upper The splendid attire that portion is connected with the heating shell is cast the heated mould of metal, and metal will be cast when using and is put into heated mould It is interior, it is cast after metal melt from the bottom stamp of heated mould and enters part mold cavity so that is cast molten metal surface Bits cannot be introduced into part mould, it is ensured that product quality.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is Fig. 1 front view;
Fig. 3 is the structural representation of heating shell and seal casinghousing in the embodiment of the present invention;
Fig. 4 is the structural representation of casting mould in the embodiment of the present invention.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, seal casinghousing is installed in new induction furnace, including frame 1, the frame 1, institute The inner chamber for stating seal casinghousing is connected with vacuum extractor 2;Also include heating shell 3, the heating shell 3 is sealedly connected on the sealing On housing, the inner chamber of the heating shell 3 and the intracavity inter-connection of the seal casinghousing, the seal casinghousing include the first housing 5 With the second housing 6, sealing device and closing device are provided between first housing 5 and second housing 6;Also include electromagnetism Heater, the electromagnetic heater includes induction coil 4, and the induction coil 4 is wrapped in outside the heating shell 3;Also wrap The casting mould being arranged in the seal casinghousing is included, as shown in figure 4, the casting mould includes part mould 7, the part mould The splendid attire that 7 top is connected with the heating shell is cast the heated mould 9 of metal 8, and the heated mould 9 is provided with charging The intracavity inter-connection of mouth 10, the inner chamber of the heated mould 9 and the part mould 7.The vacuum extractor 2 includes lobe pump 19.
The heating shell 3 is quartz glass shell.With excellent high temperature resistant and heat shock resistance power ability.
First housing 5 is located at the top of the second housing 6.
A diameter of 130mm of the induction coil, adds the magnetic line of force quantity of cutting alloy bar so that alloy bar is quick Fusing.The induction coil 4 has been directly connected to electric capacity 16, reduces energy loss.The electromagnetic heater includes heating and controlled Device processed, the heating control apparatus includes IGBT module so that working frequency brings up to 10000HZ, makes to be cast metal Body skin effect strengthens, rapid melting.IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar is brilliant Body pipe, the compound full-control type voltage driven type work(being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube) Rate semiconductor devices, has advantage of both MOSFET high input impedance and GTR low conduction voltage drop concurrently.GTR saturation voltage drops Low, current carrying density is big, but driving current is larger;MOSFET driving power very littles, switching speed is fast, but conduction voltage drop is big, current-carrying Density is small.IGBT combines the advantage of both the above device, and driving power is small and saturation pressure is reduced.
The sealing device includes the sealing gasket being located between first housing 5 and second housing 6.
The closing device includes the lifting seat 11 installed in the lower surface of the second housing 6, the lifting seat 11 and institute State and lifting drive is provided between frame 1, the closing device also includes can be to the inner chamber air inlet of the seal casinghousing Vent valve, not shown in the vent valve figure.
The lifting drive includes lift cylinder 12, and the upper end of the piston rod 20 of the lift cylinder 12, which is provided with, leads To seat 13, multiple pilot holes are installed on the guide holder 13, the lower surface of the lifting seat, which is provided with, to be enclosed in the pilot hole Guide rod 14, be set with support spring 15 outside the guide rod 14, the upper end of the support spring 15 is resisted against the lifting The lower surface of seat 11, the lower end of the support spring 15 is resisted against the upper surface of the guide holder 13, and second housing 6 is installed On the lifting seat 11.The lifting drive includes support spring 15, and the upper end of support spring is resisted against the lifting The lower surface of seat, the lower end of support spring is resisted against the upper surface of the guide holder, realized to the first housing 5 and described second The buffering closed between housing 6, reduces the bounce of the second housing after impact of second housing to the first housing, and broken sky, Ensure that module operates steadily.
Also include cooling device, the cooling device includes the first cooling tube 17 for being enclosed on the first shell external 5 and right The second cooling tube that second housing is cooled down.Cooling device is cooled down to the first housing and the second housing, it is ensured that Normal work.
Casting die lifting seat is installed, the casting die lifting seat includes pedestal 18, the pedestal in the second shell body Lowering or hoisting gear is provided between second housing, those of ordinary skill in the art can realize the lifting using various structures The function of drive device, the concrete structure of the lifting drive will not be repeated here.
Metal will be cast when using to be put into heated mould 9, and the He of the first housing 5 is caused by sealing device and closing device The tight close of second housing 6, starts vacuum extractor, vacuum extractor is in the first housing 5, the second housing 6 and heating shell 4 After chamber is vacuumized, start electromagnetic heater, electromagnetic heater work will be cast metal 8 and melt, and be cast metal 8 and melt Enter the inner chamber of part mould 7 from the bottom stamp of heated mould 9 afterwards so that the bits for being cast the molten surface of metal 8 cannot be introduced into zero Part mould 7, it is ensured that product quality, and induction coil 4 be wrapped in it is described heating shell 3 outside, heated to being cast metal 8, It is cast after metal 8 melts and enters the inner chamber of part mould 7 under gravity, eliminates cumbersome turndown device and complicated close Seal apparatus is greatly reduced the volume of vacuum chamber, shortens the time vacuumized, while automation control can be carried out easily System, reduces influence of the operator to product quality, reduces the requirement to personnel's technical ability.And the heating shell 3 is nipple shape, Further reduce the volume of vacuum chamber.Casting die lifting seat is installed in second housing 6, to adapt to different casting dies The height of tool.It is high and high with steady quality, the low, automaticity that consumes energy that this new induction furnace invests small, production efficiency Advantage, yield rate reaches 70%;Every group of power consumption drops to 4KW;Every group time-consuming is dropped to 3 minutes;The qualification rate of product reaches More than 93%;Production efficiency improves 10 times compared with prior art.And with the characteristics of requiring low to operating personnel.It is applied to Small aero, the high-end sophisticated product casting such as turbocharger.
As shown in figure 4, new induction furnace casting mould, including part mould 7, the top of the part mould 7 is connected with Sheng Dress is cast the heated mould 9 of metal 8, and the heated mould 9 is provided with charging aperture 10, the inner chamber of the heated mould 9 and the part The intracavity inter-connection of mould 7.The top of the part mould 7 is connected with the heated mould 9 for containing and being cast metal 8, will be cast when using Make metal 8 to be put into heated mould, be cast after metal melt from the bottom stamp of heated mould 9 and enter the inner chamber of part mould 7 so that quilt The bits on casting molten metal surface cannot be introduced into part mould, it is ensured that product quality.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention. A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can in other embodiments be realized in the case where not departing from the spirit or scope of the present invention.Therefore, this hair It is bright to be limited to the embodiments shown herein, but to accord with principles disclosed herein and features of novelty phase one The most wide scope caused.

Claims (5)

1. new induction furnace, it is characterised in that:Including frame, seal casinghousing is installed in the frame, the seal casinghousing Inner chamber is connected with vacuum extractor;Also include heating shell, the heating shell is sealedly connected on the seal casinghousing, the heating The inner chamber of shell and the intracavity inter-connection of the seal casinghousing, the seal casinghousing include the first housing and the second housing, described the Sealing device and closing device are provided between one housing and second housing;Also include electromagnetic heater, the electromagnetism adds Thermal includes induction coil, and the induction coil is wrapped in outside the heating shell;Also include being arranged in the seal casinghousing Casting mould, the casting mould includes part mould, and the top of the part mould is connected with the Sheng in the heating shell Dress is cast the heated mould of metal, and the heated mould is provided with charging aperture, the inner chamber of the heated mould and the part mould it is interior Chamber is connected, and first shell body is located at the top of the second housing, and the sealing device includes being located at first housing and described the Sealing gasket between two housings, closing device include installed in second housing lower surface lifting seat, the lifting seat and It is provided between the frame in lifting drive, the second shell body and casting die lifting seat is installed, the casting die lifting Seat includes pedestal, and lowering or hoisting gear is provided between the pedestal and second housing;The lifting drive includes lifting air Cylinder, the upper end of the piston rod of the lift cylinder, which is provided with guide holder, the guide holder, is provided with multiple pilot holes, the liter The lower surface of drop seat is provided with outside the guide rod being enclosed in the pilot hole, the guide rod and is set with support spring, the support The upper end of spring is resisted against the lower surface of the lifting seat, and the lower end of the support spring is resisted against the upper table of the guide holder Face, second housing is arranged on the lifting seat.
2. new induction furnace as claimed in claim 1, it is characterised in that:The heating shell is quartz glass shell.
3. new induction furnace as claimed in claim 1, it is characterised in that:A diameter of 130mm of the induction coil, the sense Coil is answered to be directly connected to electric capacity, the electromagnetic heater includes heating control apparatus, and the heating control apparatus includes IGBT module.
4. new induction furnace as claimed in claim 1, it is characterised in that:Also include cooling device, the cooling device includes It is enclosed on the first external cooling tube of the first shell and the second cooling tube cooled down to second housing.
5. the new induction furnace as described in Claims 1-4 any claim, it is characterised in that:The heating shell is nipple Shape.
CN201410752491.5A 2014-12-09 2014-12-09 New induction furnace and new induction furnace casting mould Active CN104493145B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410752491.5A CN104493145B (en) 2014-12-09 2014-12-09 New induction furnace and new induction furnace casting mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410752491.5A CN104493145B (en) 2014-12-09 2014-12-09 New induction furnace and new induction furnace casting mould

Publications (2)

Publication Number Publication Date
CN104493145A CN104493145A (en) 2015-04-08
CN104493145B true CN104493145B (en) 2017-08-01

Family

ID=52934645

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410752491.5A Active CN104493145B (en) 2014-12-09 2014-12-09 New induction furnace and new induction furnace casting mould

Country Status (1)

Country Link
CN (1) CN104493145B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105728669B (en) * 2016-03-09 2017-11-28 沈阳广泰真空设备有限公司 A kind of new VIDP3T vacuum induction melting furnaces dynamic casting room
CN113751702B (en) * 2021-08-26 2023-04-21 黎川县杰汇金属有限公司 Aluminum plate production is with aluminum plate automatic molding kiln

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998264A (en) * 1973-11-05 1976-12-21 Bbc Brown Boveri & Company Limited Apparatus for producing metallic castings by progressively melting a solid charge
EP0083205A2 (en) * 1981-12-30 1983-07-06 ROLLS-ROYCE plc Apparatus for producing castings in a vacuum.
CN1300863A (en) * 1999-12-17 2001-06-27 中国科学院金属研究所 Process for preparing non-crystal alloy block
CN201983618U (en) * 2010-12-22 2011-09-21 李碚 Multifunctional cold crucible induction smelting furnace with quartz tube furnace body
CN203489668U (en) * 2013-07-07 2014-03-19 河南省超贝工程设备有限公司 Vacuum induction cold crucible casting device
CN203711802U (en) * 2013-12-20 2014-07-16 东莞宜安科技股份有限公司 Metal vacuum melting compression molding equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607805C1 (en) * 1996-03-01 1997-07-17 Ald Vacuum Techn Gmbh Melting and casting metals
CN2399132Y (en) * 1999-12-24 2000-10-04 中国科学院金属研究所 Vacuum pressure casting large non-crystal alloy appts.
KR20060109961A (en) * 2003-11-26 2006-10-23 프라이스 제임스 케언스 Casting of metal artefacts
CN101293277B (en) * 2008-06-13 2010-06-02 清华大学 Pressure difference injection moulding method and equipment for amorphous magnesium alloy
CN201308981Y (en) * 2008-11-27 2009-09-16 比亚迪股份有限公司 Amorphous alloy die-casting feeding device and amorphous alloy die-casting machine
CN204657461U (en) * 2014-12-09 2015-09-23 潍坊一立精密铸造有限公司 Novel induction furnace and novel induction furnace casting mould

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998264A (en) * 1973-11-05 1976-12-21 Bbc Brown Boveri & Company Limited Apparatus for producing metallic castings by progressively melting a solid charge
EP0083205A2 (en) * 1981-12-30 1983-07-06 ROLLS-ROYCE plc Apparatus for producing castings in a vacuum.
CN1300863A (en) * 1999-12-17 2001-06-27 中国科学院金属研究所 Process for preparing non-crystal alloy block
CN201983618U (en) * 2010-12-22 2011-09-21 李碚 Multifunctional cold crucible induction smelting furnace with quartz tube furnace body
CN203489668U (en) * 2013-07-07 2014-03-19 河南省超贝工程设备有限公司 Vacuum induction cold crucible casting device
CN203711802U (en) * 2013-12-20 2014-07-16 东莞宜安科技股份有限公司 Metal vacuum melting compression molding equipment

Also Published As

Publication number Publication date
CN104493145A (en) 2015-04-08

Similar Documents

Publication Publication Date Title
CN103170596B (en) Multipurpose vacuum casting device
CN206153528U (en) High vacuum die casting former of cubic amorphous alloy
CN106424637A (en) Massive amorphous alloy high-vacuum die casting forming equipment and process
CN104043792A (en) Manufacturing device for light alloy or light metal semi-solid slurry and manufacturing method
CN109773145B (en) High-vacuum continuous casting forming equipment and process for noble metal layered composite material
CN110508777B (en) Die casting method of vertical amorphous alloy die casting machine
CN103639387A (en) Metal vacuum melting die-cast formation equipment
CN104493145B (en) New induction furnace and new induction furnace casting mould
CN105414510A (en) Continuous vacuum casting device and method for silver alloy
CN114850450A (en) Refractory high-activity multi-element complex alloy suspension induction smelting negative-pressure suction casting device and method
CN103394674B (en) The method of casting thin foundry goods vaccum sensitive stove and casting thin-wall titanium alloy foundry goods
CN204657461U (en) Novel induction furnace and novel induction furnace casting mould
CN206828617U (en) Vacuum melting nickel ingot produces inert gas protection device
CN103184358B (en) Reinforcing and toughening method for magnesium aluminium intermetallic compound
CN204262337U (en) A kind of silver alloy vacuum-casting equipment
CN102941335B (en) Vacuum suction casting device, formula and preparation method for AlNiCo permanent-magnet alloy casting
CN209830260U (en) Large-scale high-temperature high-strength material vacuum precision casting equipment
CN107570687A (en) A kind of vacuum casting device and pouring procedure for reducing aluminium alloy castings crystallite dimension
CN107677126A (en) A kind of electromagnetic suspension water jacketed copper crucible
CN203711802U (en) Metal vacuum melting compression molding equipment
CN217044547U (en) Pressure-regulating casting furnace for casting uniform segregation-free bar
CN106756073B (en) Multifunctional casting equipment applied to high-melting-point and high-activity metal materials
CN207407680U (en) A kind of electromagnetic suspension water jacketed copper crucible
CN109822088A (en) Large high-temperature high-strength material vacuum precision Casting Equipment
CN206263234U (en) A kind of amorphous metal vacuum melting former

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: 261057 north of the third industrial Street and west of Yinda Road, Weicheng Economic Development Zone, Weifang City, Shandong Province

Patentee after: Shandong first power Polytron Technologies Inc.

Address before: 261057, Weicheng Economic Development Zone, Shandong, Weifang Province, north of Industrial Street, west of Yin Road

Patentee before: WEIFANG YILI PRECISION CASTING Co.,Ltd.

CP03 Change of name, title or address