CN110748591A - Novel glass fiber reinforced plastic shock absorber and production process thereof - Google Patents

Novel glass fiber reinforced plastic shock absorber and production process thereof Download PDF

Info

Publication number
CN110748591A
CN110748591A CN201911027965.9A CN201911027965A CN110748591A CN 110748591 A CN110748591 A CN 110748591A CN 201911027965 A CN201911027965 A CN 201911027965A CN 110748591 A CN110748591 A CN 110748591A
Authority
CN
China
Prior art keywords
shock absorber
fiber reinforced
glass fiber
reinforced plastic
base
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.)
Pending
Application number
CN201911027965.9A
Other languages
Chinese (zh)
Inventor
宋国强
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201911027965.9A priority Critical patent/CN110748591A/en
Publication of CN110748591A publication Critical patent/CN110748591A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00Vibration-dampers; Shock-absorbers
    • F16F7/10Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal

Abstract

The invention discloses a novel glass fiber reinforced plastic shock absorber and a production process thereof, and particularly relates to the field of shock absorbers. The shock absorber shell is formed by compression molding the whole materials of glass steel, has higher corrosion resistance, lighter weight than metal materials, higher rigidity than plastic materials, long service life, less production process flow and low cost, and simultaneously has smooth surface and high brightness after being formed, so that the shock absorber shell does not need to be sprayed with plastics or paint, and can be sprayed with plastics or paint according to the requirements of different users and environments.

Description

Novel glass fiber reinforced plastic shock absorber and production process thereof
Technical Field
The invention relates to the field of shock absorbers, in particular to a novel glass fiber reinforced plastic shock absorber and a production process thereof.
Background
The damping shock absorber has the advantages of compound vibration isolation and noise reduction, low natural frequency and good vibration isolation effect, is technically improved in order to further meet the requirement of modern building development, is used for manufacturing the WGD type damping spring compound shock absorber, is used for combining a damping spring and a rubber vibration damping pad, overcomes the defects of the WGD type damping spring compound shock absorber, has the advantages of compound vibration isolation and noise reduction, low natural frequency and good vibration isolation effect, is more superior to isolation of solid sound transmission, particularly to isolation of high-frequency impact caused body sound transmission, and is an ideal product of active and passive vibration isolation.
But the existing shock absorber shell on the market is made of metal cast iron, is not corrosion-resistant in the using process, and has the advantages of small application range, short service life and larger weight.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a novel glass fiber reinforced plastic damper and a production process thereof, wherein the materials forming the damper shell are all molded by glass fiber reinforced plastic, the damper shell has high corrosion resistance, lighter weight than metal materials, higher rigidity than plastic materials, long service life, fewer production process flows, and low cost, and the damper shell has a smooth surface and high brightness after being molded, so as to solve the problems proposed in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel glass steel bumper shock absorber, includes the fixed plate, the bottom of fixed plate is provided with rubber friction pad, and the top of fixed plate installs the base, the inside both sides position department that is located the base of fixed plate all is provided with the fixed orifices, the top edge of base is connected with down the casing, the top of casing is provided with the casing down, the top of base is located the inboard of casing down and installs the spring, fixed plate, base, lower casing and last casing are the component of glass steel material.
In a preferred embodiment, the rubber friction pad and the fixing plate are fixed by bonding with an adhesive.
In a preferred embodiment, the rubber friction pad has the same shape as the fixing plate, and a through hole having a cross-sectional inner diameter equal to that of the fixing hole is provided at a position corresponding to a lower position of the fixing hole inside the rubber friction pad.
In a preferred embodiment, the cross-sectional outer diameter of the upper housing is larger than the cross-sectional outer diameter of the lower housing.
In a preferred embodiment, the upper end and the lower end of the spring are both provided with a fixed block, and the upper fixed block and the lower fixed block are fixedly connected with the inner wall of the upper shell and the top end of the base through bolts.
A production method of a glass fiber reinforced plastic shock absorber comprises the following specific production steps:
step one, preparing a raw material made of glass fiber reinforced plastics, and preparing the following components in parts by weight: 13KG of resin, 6.5KG of low-shrinkage resin, 200G of curing agent, 900G of zinc stearate, 20KG of coarse calcium powder, 18KG of fine calcium powder and 20KG of chopped fiber;
step two, mixing materials: putting the three raw materials of the resin, the low-shrinkage resin and the curing agent into a stirring tank according to the weight, and stirring for 6 minutes to uniformly stir the raw materials; then adding the zinc stearate, the coarse calcium powder and the fine calcium powder in parts by weight, and stirring for 30 minutes; finally, the chopped fibers are put in and stirred for 20 minutes again to be uniformly stirred;
step three, entering a mold: pouring the mixed raw materials into a mould, and compacting by using a hydraulic machine;
step four, heating and curing: heating the mixed raw materials in the die to 120-130 ℃ to solidify and form;
step five, manual trimming: manually finishing the local part of the processed product by using a special grinding tool to ensure that the surface of the product is smooth and flat;
and step six, assembling, fixing, packaging and warehousing, namely assembling and fixing the glass fiber reinforced plastic product components forming the shock absorber and the spring, and packaging and warehousing after the inspection is qualified.
The invention has the technical effects and advantages that: compared with the prior art, the shock absorber shell is formed by compression molding the whole materials which form the shock absorber shell by adopting glass steel materials, has higher corrosion resistance, lighter weight than metal materials, higher rigidity than plastic materials, long service life, less production process flows and low cost, has smooth surface and high brightness after being formed, does not need to be sprayed with plastics or paint, can be sprayed with plastics or paint according to different requirements of users and environments, and can be suitable for all glass steel shock absorbers according to the formula and the process flow of forming the glass steel products.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is an external structural view of the present invention.
The reference signs are: 1 fixed plate, 2 rubber friction pads, 3 fixed holes, 4 bases, 5 lower shells, 6 upper shells and 7 springs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1-2, the invention provides a novel glass fiber reinforced plastic shock absorber, which comprises a fixing plate 1, wherein a rubber friction pad 2 is arranged at the bottom of the fixing plate 1, a base 4 is arranged at the top of the fixing plate 1, fixing holes 3 are arranged in the fixing plate 1 and positioned at two sides of the base 4, a lower shell 5 is connected to the edge of the top of the base 4, an upper shell 6 is arranged above the lower shell 5, a spring 7 is arranged at the top end of the base 4 and positioned at the inner side of the lower shell 5, and the fixing plate 1, the base 4, the lower shell 5 and the upper shell 6 are all made of glass fiber reinforced plastic.
Further, the rubber friction pad 2 and the fixing plate 1 are bonded and fixed through an adhesive;
further, the rubber friction pad 2 and the fixing plate 1 are the same in shape, a through hole is formed in the rubber friction pad 2 corresponding to the position below the fixing hole 3, and the inner diameter of the cross section of the through hole is equal to that of the cross section of the fixing hole 3;
further, the cross-sectional outer diameter of the upper shell 6 is larger than that of the lower shell 5;
further, the upper end and the lower end of the spring 7 are both provided with a fixed block, and the upper fixed block and the lower fixed block are fixedly connected with the inner wall of the upper shell 6 and the top end of the base 4 through bolts;
a production method of a glass fiber reinforced plastic shock absorber comprises the following specific production steps:
step one, preparing raw materials, namely preparing the following components in parts by weight: 13KG of resin, 6.5KG of low-shrinkage resin, 200G of curing agent, 900G of zinc stearate, 20KG of coarse calcium powder, 18KG of fine calcium powder and 20KG of chopped fiber;
step two, mixing materials: putting the three raw materials of the resin, the low-shrinkage resin and the curing agent into a stirring tank according to the weight, and stirring for 6 minutes to uniformly stir the raw materials; then adding the zinc stearate, the coarse calcium powder and the fine calcium powder in parts by weight, and stirring for 30 minutes; finally, the chopped fibers are put in and stirred for 20 minutes again to be uniformly stirred;
step three, entering a mold: pouring the mixed raw materials into a mould, and compacting by using a hydraulic machine;
step four, heating and curing: heating the mixed raw materials in the die to 120-130 ℃ to solidify and form;
step five, manual trimming: manually finishing the local part of the processed product by using a special grinding tool to ensure that the surface of the product is smooth and flat;
and step six, assembling, fixing, packaging and warehousing, namely assembling and fixing the glass fiber reinforced plastic product components forming the shock absorber and the spring, and packaging and warehousing after the inspection is qualified.
Example 2:
as shown in fig. 1-2, the invention provides a novel glass fiber reinforced plastic shock absorber, which comprises a fixing plate 1, wherein a rubber friction pad 2 is arranged at the bottom of the fixing plate 1, a base 4 is arranged at the top of the fixing plate 1, fixing holes 3 are arranged in the fixing plate 1 and positioned at two sides of the base 4, a lower shell 5 is connected to the edge of the top of the base 4, an upper shell 6 is arranged above the lower shell 5, a spring 7 is arranged at the top end of the base 4 and positioned at the inner side of the lower shell 5, and the fixing plate 1, the base 4, the lower shell 5 and the upper shell 6 are all made of glass fiber reinforced plastic.
Further, the rubber friction pad 2 and the fixing plate 1 are bonded and fixed through an adhesive;
further, the rubber friction pad 2 and the fixing plate 1 are the same in shape, a through hole is formed in the rubber friction pad 2 corresponding to the position below the fixing hole 3, and the inner diameter of the cross section of the through hole is equal to that of the cross section of the fixing hole 3;
further, the cross-sectional outer diameter of the upper shell 6 is larger than that of the lower shell 5;
further, the upper end and the lower end of the spring 7 are both provided with fixed blocks, and the upper fixed block and the lower fixed block are fixedly connected with the inner wall of the upper shell 6 and the top end of the base 4 through bolts.
A production method of a glass fiber reinforced plastic shock absorber comprises the following specific production steps:
step one, preparing raw materials, namely preparing the following components in parts by weight: 13KG of resin, 6.5KG of low-shrinkage resin, 200G of curing agent, 900G of zinc stearate, 20KG of coarse calcium powder, 18KG of fine calcium powder and 20KG of chopped fiber;
step two, mixing materials: putting the three raw materials of the resin, the low-shrinkage resin and the curing agent into a stirring tank according to the weight, and stirring for 6 minutes to uniformly stir the raw materials; then adding the zinc stearate, the coarse calcium powder and the fine calcium powder in parts by weight, and stirring for 30 minutes; finally, the chopped fibers are put in and stirred for 20 minutes again to be uniformly stirred;
step three, entering a mold: pouring the mixed raw materials into a mould, and compacting by using a hydraulic machine;
step four, heating and curing: heating the mixed raw materials in the die to 120-130 ℃ to solidify and form;
step five, manual trimming: manually finishing the local part of the processed product by using a special grinding tool to ensure that the surface of the product is smooth and flat;
step six, plastic spraying or paint spraying: according to different requirements of products, part of the products adopt a plastic spraying process, and part of the products adopt a paint spraying process, (1) plastic spraying treatment: the powder coating is absorbed on the surface of a workpiece by an electrostatic plastic spraying process, the powder coating is fed into a spray gun by a powder supply system through compressed air gas, high voltage generated by a high-voltage electrostatic generator is added at the front end of the spray gun, dense charges are generated nearby due to corona discharge, when the powder is sprayed out of a gun nozzle, charged coating particles are formed and are absorbed on the workpiece with the opposite polarity to the powder under the action of electrostatic force, the more the charges are accumulated along with the increase of the sprayed powder, when the powder reaches a certain thickness, the electrostatic repulsion is generated, the adsorption is not continued, so that the whole workpiece obtains a powder coating with a certain thickness, and then the powder is melted, leveled and solidified through overheating, namely a hard coating film is formed on the surface of the workpiece. Heating the powder coating on the surface to a specified temperature and preserving heat for a corresponding time to melt, level and solidify the powder coating so as to obtain the desired workpiece surface effect, wherein the project adopts electric heating, heating for 2 hours at 200 ℃, and then cooling to room temperature and taking out; (2) spray painting and air drying treatment: carry out the processing of spraying paint to the product main part, use oil gas or resin paint or water paint according to the difference of product requirement, the during operation of spraying paint, transport the work piece to the spray booth in, exhaust system begins to go on convulsions to the spray booth, then begins artifical spray paint work, and the operator carries out the operation of spraying plastics to the work piece with hand-held type electrostatic painting rifle, and the back is accomplished in spraying paint, arranges the work piece in the spray booth and dries naturally, does not influence normal spray paint work.
And seventhly, assembling, fixing, packaging and warehousing, namely assembling and fixing the glass fiber reinforced plastic product components forming the shock absorber and the spring, and packaging and warehousing after the inspection is qualified.
Different from the embodiment 1, the embodiment 2 adds the plastic spraying or paint spraying treatment to the glass fiber reinforced plastic product, so as to carry out the plastic spraying or paint spraying treatment to the surface of the glass fiber reinforced plastic product according to different requirements, the whole shock absorber shell is made of glass fiber reinforced plastic materials by compression molding, the shock absorber shell has higher corrosion resistance, lighter weight than metal materials, higher rigidity than plastic materials, long service life, less production process flows and low cost, and meanwhile, the shock absorber shell has smooth surface and high brightness after being molded, so that the shock absorber shell does not need to be subjected to plastic spraying or paint spraying, the shock absorber shell can be subjected to the plastic spraying or paint spraying treatment according to different requirements of users and environments, and the formula and the process flow for forming the glass fiber reinforced plastic product can be suitable for all glass fiber reinforced plastic shock absorbers.
The working principle of the invention is as follows:
referring to the attached drawings 1-2 of the specification, a fixed plate 1, a base 4, a lower shell 5 and an upper shell 6 are all made of glass fiber reinforced plastic, and the glass fiber reinforced plastic is processed by stirring prepared raw materials, pouring mixed raw materials into a mold, and compacting by using a hydraulic press; then heating the mixed raw materials in the die to 120-130 ℃ to solidify and form the mixed raw materials; then, manually using a special grinding tool to trim part of the processed product, so that the surface of the product is smooth and flat; and carrying out plastic spraying or paint spraying treatment according to the requirements of different users and environments; and after the treatment is finished, assembling and fixing the glass fiber reinforced plastic product components forming the shock absorber and the spring, and packaging and warehousing after the inspection is qualified.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (6)

1. The utility model provides a novel glass steel bumper shock absorber, includes fixed plate (1), its characterized in that: the bottom of fixed plate (1) is provided with rubber friction pad (2), and base (4) are installed at the top of fixed plate (1), the inside both sides position department that is located base (4) of fixed plate (1) all is provided with fixed orifices (3), the top edge of base (4) is connected with down casing (5), the top of casing (5) is provided with casing (6) down, spring (7) are installed to the inboard that the top of base (4) is located casing (5) down, fixed plate (1), base (4), casing (5) and last casing (6) are the component of glass steel material down.
2. The novel glass fiber reinforced plastic shock absorber as claimed in claim 1, wherein: the rubber friction pad (2) and the fixing plate (1) are bonded and fixed through an adhesive.
3. The novel glass fiber reinforced plastic shock absorber as claimed in claim 1, wherein: the rubber friction pad (2) and the fixing plate (1) are same in shape, a through hole is formed in the rubber friction pad (2) at a position corresponding to the lower position of the fixing hole (3), and the inner diameter of the cross section of the through hole is equal to that of the cross section of the fixing hole (3).
4. The novel glass fiber reinforced plastic shock absorber as claimed in claim 1, wherein: the cross section outer diameter of the upper shell (6) is larger than that of the lower shell (5).
5. The novel glass fiber reinforced plastic shock absorber as claimed in claim 1, wherein: the upper end and the lower end of the spring (7) are respectively provided with a fixed block, and the upper fixed block and the lower fixed block are fixedly connected with the inner wall of the upper shell (6) and the top end of the base (4) through bolts.
6. A production method of a glass fiber reinforced plastic shock absorber comprises the following specific production steps:
step one, preparing a raw material made of glass fiber reinforced plastics, and preparing the following components in parts by weight: 13KG of resin, 6.5KG of low-shrinkage resin, 200G of curing agent, 900G of zinc stearate, 20KG of coarse calcium powder, 18KG of fine calcium powder and 20KG of chopped fiber;
step two, mixing materials: putting the three raw materials of the resin, the low-shrinkage resin and the curing agent into a stirring tank according to the weight, and stirring for 6 minutes to uniformly stir the raw materials; then adding the zinc stearate, the coarse calcium powder and the fine calcium powder in parts by weight, and stirring for 30 minutes; finally, the chopped fibers are put in and stirred for 20 minutes again to be uniformly stirred;
step three, entering a mold: pouring the mixed raw materials into a mould, and compacting by using a hydraulic machine;
step four, heating and curing: heating the mixed raw materials in the die to 120-130 ℃ to solidify and form;
step five, manual trimming: manually finishing the local part of the processed product by using a special grinding tool to ensure that the surface of the product is smooth and flat;
and step six, assembling, fixing, packaging and warehousing, namely assembling and fixing the glass fiber reinforced plastic product components forming the shock absorber and the spring, and packaging and warehousing after the inspection is qualified.
CN201911027965.9A 2019-10-28 2019-10-28 Novel glass fiber reinforced plastic shock absorber and production process thereof Pending CN110748591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911027965.9A CN110748591A (en) 2019-10-28 2019-10-28 Novel glass fiber reinforced plastic shock absorber and production process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911027965.9A CN110748591A (en) 2019-10-28 2019-10-28 Novel glass fiber reinforced plastic shock absorber and production process thereof

Publications (1)

Publication Number Publication Date
CN110748591A true CN110748591A (en) 2020-02-04

Family

ID=69280227

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911027965.9A Pending CN110748591A (en) 2019-10-28 2019-10-28 Novel glass fiber reinforced plastic shock absorber and production process thereof

Country Status (1)

Country Link
CN (1) CN110748591A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0743003B2 (en) * 1987-12-09 1995-05-15 オイレス工業株式会社 Dynamic vibration absorber
CN201297355Y (en) * 2008-09-26 2009-08-26 重庆市电力公司沙坪坝供电局 Vibration absorber used for low frequency noise products
CN202375127U (en) * 2011-12-16 2012-08-15 王剑 Light explosion-proof helmet
CN203868210U (en) * 2014-05-15 2014-10-08 曾建伟 Adjustable shock absorber provided with damper spring
CN204610663U (en) * 2015-02-11 2015-09-02 陈琮琳 A kind of novel spring vibration damper
CN205298371U (en) * 2015-12-31 2016-06-08 天津嘉诚信科技有限公司 Damping spring shock absorber
CN106678236A (en) * 2015-11-09 2017-05-17 杨文元 Spring shock absorber
CN207005169U (en) * 2017-06-22 2018-02-13 安徽江淮汽车集团股份有限公司 Magnetic denounces bump leveller
CN109950678A (en) * 2017-12-20 2019-06-28 西安龙之梦网络信息有限公司 A kind of communication antenna protective device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0743003B2 (en) * 1987-12-09 1995-05-15 オイレス工業株式会社 Dynamic vibration absorber
CN201297355Y (en) * 2008-09-26 2009-08-26 重庆市电力公司沙坪坝供电局 Vibration absorber used for low frequency noise products
CN202375127U (en) * 2011-12-16 2012-08-15 王剑 Light explosion-proof helmet
CN203868210U (en) * 2014-05-15 2014-10-08 曾建伟 Adjustable shock absorber provided with damper spring
CN204610663U (en) * 2015-02-11 2015-09-02 陈琮琳 A kind of novel spring vibration damper
CN106678236A (en) * 2015-11-09 2017-05-17 杨文元 Spring shock absorber
CN205298371U (en) * 2015-12-31 2016-06-08 天津嘉诚信科技有限公司 Damping spring shock absorber
CN207005169U (en) * 2017-06-22 2018-02-13 安徽江淮汽车集团股份有限公司 Magnetic denounces bump leveller
CN109950678A (en) * 2017-12-20 2019-06-28 西安龙之梦网络信息有限公司 A kind of communication antenna protective device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
闫康平: "《工程材料》", 31 July 2001 *

Similar Documents

Publication Publication Date Title
KR850000298B1 (en) Process for preparing molded plastic product
US3761047A (en) Mold coating
CA2597637C (en) Method of forming a metal matrix component
CN101954774B (en) Productive technology of automobile rear shelf
US6309587B1 (en) Composite molding tools and parts and processes of forming molding tools
CN110086898A (en) A kind of mobile terminal component and preparation method thereof
CN101185963A (en) Vanishing mould casting technique of blast furnace cooling wall
EP2862639B1 (en) Utilization of Paint Slag-Containing Waste Limestone Powder as raw material for damping sheet and Treatment Process Thereof
CN103990760A (en) Lost foam casting process of aluminum alloy cylinder body or cylinder cover
CN110748591A (en) Novel glass fiber reinforced plastic shock absorber and production process thereof
CN110976758B (en) Lost foam full mold casting process
CN102503254A (en) Accessory for concrete machine tool and preparation method thereof
CN103448183A (en) Molding method for surface layer with composite coating
CN111267327A (en) Skin stretch forming die and manufacturing method thereof
CN108357035B (en) Spiral chute mold and use method thereof
CN103752766A (en) Rapid manufacturing method for resin casting mould
CN108297453A (en) A method of utilizing Mold Making glass fibre reinforced plastics casing
CN108788003B (en) Powdery mold release agent and preparation method and use method thereof
CN107984401B (en) Diamond grinding wheel with lotus seedpod structure and preparation method thereof
CN102756087A (en) Manufacturing process of diesel engine
CN109732816A (en) It is a kind of using foam as the composite material manufacture craft of mould substrate
CN107130767B (en) A kind of production method of Wood-plastic floor
US20100229682A1 (en) Cold cast mass element
CN108162432B (en) Rapid part manufacturing process of carbon fiber reinforced paste resin
CN208527065U (en) Spray finishing jig

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200204

RJ01 Rejection of invention patent application after publication