imgboxbg
这是描述信息
龙口金正机械

The company has a total investment of 350 million yuan, a fixed assets of 150 million yuan, 1500 employees, covering an area of 100,000 square meters, and a construction   area of 80,000 square meters. Jinzheng Machinery is a professional manufacturer of automobile brake discs, brake hubs, water pumps, oil pumps, air pumps and other components, which integrates development, casting, processing and marketing. It has invested 10 million yuan in the design and development of ABS brake discs, brake hubs and other products in accordance with the market demand. The company has more than 2000 product models, mainly exported. America, Europe, Korea, Japan, Canada, South Africa, Western Europe, Taiwan and other countries and regions.

龙口金正机械

VIDEO

___

       公司拥有专业技术队伍,配备先进的计算机辅助设计、辅助制造设施和软件,拥有先进生产、检测设备410余台,其中高精度自动化生产设备350余台。

imgboxbg

Events

Establishment, Development, Rapid Development and Strategic Reorganization

imgboxbg

Plant and equipment

The company has a total investment of 350 million yuan, a fixed assets of 150 million yuan, 1500 employees, covering an area of 100,000 square meters, and a construction area of 80,000 square meters.

imgboxbg

Product

According to the market demand, we have invested 10 million yuan to design and develop ABS brake disc, brake hub and other products. Our products have reached more than 2000 types.

Welcome to Longkou Jinzheng Machinery Co., Ltd.
Welcome to Longkou Jinzheng Machinery Co., Ltd.
Time of issue : 2019-08-20 18:11:00
LongkouJinzhengMachineryCo.,Ltd.wasestablishedinthebeautifulcoastalcityofEasternChina,Longkou,formerlyknownasLongkouZhengzhuangFoundryFactory.ItwasfoundedinSeptember1993.InJuly2002,itjointlyestablishedLongkouJinzhengMachineryCo.,Ltd.withSouthKorea.Itis10kilometersfromLongkouPort,80kilometersfromYantaiPort,80kilometersfromLaishanAirport,andislocatedinQingdao,NorthandDaThecompanyisfacingeachotheracrossthesea,withconvenienttransportationanduniquegeographicalconditions,whichprovideabroadprospectfordevelopment.
See more information
LongkouJinzhengMachineryCo.,Ltd.wasestablishedinthebeautifulcoastalcityofEasternChina,Longkou,formerlyknownasLongkouZhengzhuangFoundryFactory.ItwasfoundedinSeptember1993.InJuly2002,itjointlyestablishedLongkouJinzhengMachineryCo.,Ltd.withSouthKorea.Itis10kilometersfromLongkouPort,80kilometersfromYantaiPort,80kilometersfromLaishanAirport,andislocatedinQingdao,NorthandDaThecompanyisfacingeachotheracrossthesea,withconvenienttransportationanduniquegeographicalconditions,whichprovideabroadprospectfordevelopment.
Kim Jong-un warmly invites friends from home and abroad to come to our company for negotiation and guidance.
Kim Jong-un warmly invites friends from home and abroad to come to our company for negotiation and guidance.
Unity,pragmatism,innovation,development,pursuitofnever-stop,customersareaboveeverything,withscienceandtechnologyandhumanresourcesasthecoredrivingforceandinternaldrivingforce,withthedevelopmentofnewproductsandmarketingasthedrivingforce,andstrivetocreatewell-knowndomesticenterprises.Wearewillingtoestablishequalandmutuallybeneficialcooperativerelationshipwithdomesticandforeigncustomerswithhighqualityproductsandfrankmind,jointlyexploretheroadofdevelopmentofautomotivepartsmanufacturingindustryinthenewcentury,andpursueexcellenceandendlessness.KimJong-unwarmlyinvitesfriendsfromhomeandabroadtonegotiateandguidethecompany.
See more information
Unity,pragmatism,innovation,development,pursuitofnever-stop,customersareaboveeverything,withscienceandtechnologyandhumanresourcesasthecoredrivingforceandinternaldrivingforce,withthedevelopmentofnewproductsandmarketingasthedrivingforce,andstrivetocreatewell-knowndomesticenterprises.Wearewillingtoestablishequalandmutuallybeneficialcooperativerelationshipwithdomesticandforeigncustomerswithhighqualityproductsandfrankmind,jointlyexploretheroadofdevelopmentofautomotivepartsmanufacturingindustryinthenewcentury,andpursueexcellenceandendlessness.KimJong-unwarmlyinvitesfriendsfromhomeandabroadtonegotiateandguidethecompany.
How to Maintain Brake Disc
How to Maintain Brake Disc
Time of issue : 2019-08-21 08:37:00
Ownerswhousuallyliketomaintaintheircarsmayneglectthemaintenanceofbrakediscs.Manyfriendsmaycallthemselvesolddrivers,buttheyprobablydon'tknowmuchaboutbrakediscs.Todaywearegoingtotalkabouthowtomaintainthebrakedisc:thebrakepadsneedtobereplacedwhentheyarebetween30,000and40,000miles,thebrakediscsneedtobereplacedwhentheyareleftto70,000miles,andthebrakepadsneedtobereplacedwhentheyareusedforarelativelyshorttime.Ingeneral,thebrakediscsarereplacedaftertworeplacements,andtherearbrakesneedtobereplacedbetween80,000and100,000miles.Toreplacethebrakeoil,thebrakeoilhaswaterabsorption.Ifthebrakeoilischangedfromtimetotime,themoisturecontentofairwillbeabsorbedinthebrakeoilandthemoisturecontentwillbeincreased.Whenthemoisturecontentreachesacertainconcentration,thehightemperatureproducedbybrakingwillmakebrakeoilboilandproducebubbles.
See more information
Ownerswhousuallyliketomaintaintheircarsmayneglectthemaintenanceofbrakediscs.Manyfriendsmaycallthemselvesolddrivers,buttheyprobablydon'tknowmuchaboutbrakediscs.Todaywearegoingtotalkabouthowtomaintainthebrakedisc:thebrakepadsneedtobereplacedwhentheyarebetween30,000and40,000miles,thebrakediscsneedtobereplacedwhentheyareleftto70,000miles,andthebrakepadsneedtobereplacedwhentheyareusedforarelativelyshorttime.Ingeneral,thebrakediscsarereplacedaftertworeplacements,andtherearbrakesneedtobereplacedbetween80,000and100,000miles.Toreplacethebrakeoil,thebrakeoilhaswaterabsorption.Ifthebrakeoilischangedfromtimetotime,themoisturecontentofairwillbeabsorbedinthebrakeoilandthemoisturecontentwillbeincreased.Whenthemoisturecontentreachesacertainconcentration,thehightemperatureproducedbybrakingwillmakebrakeoilboilandproducebubbles.
Basic knowledge of brake discs
Basic knowledge of brake discs
Time of issue : 2019-08-21 08:42:00
Brakesarenowdiscbrakesanddrumbrakes,andmanyoftheoldercarsarefrontandreardrums.Nowadays,manycarsarediscbrakedbothfrontandrear.Becausethediscbrakehasbetterheatdissipationthanthedrumbrake,itisnoteasytoproducethermalrecessionundertheconditionofhigh-speedbraking,soitshigh-speedbrakingeffectisgood.Theprincipleofthebrakediscisthatthemainsourceofthebrakeisfriction.Byusingthefrictionbetweenthebrakepadandthebrakedisc(drum)andthetireandtheground,thekineticenergyofthevehiclemovingisconvertedintotheheatenergyafterfriction,andthecarstops.Agoodbrakingsystemcanprovidestable,sufficientandcontrollablebrakingforce,andhasgoodhydraulictransmissionandheatdissipationabilitytoensurethattheforceappliedbythedriverfromthebrakepedalcanbefullyandeffectivelytransmittedtothemainandsub-pumps,andtoavoidhydraulicfailureandbrakingdeteriorationcausedbyhighheat.Materialdeterminesthelevelofbrakingandwearrate,likethebrand-newsharpmajorityofcarownersreflecttheabnormalbrakingnoiseisbecauseofthematerialoftherearbrakepad,afterreplacingtheimportedbrakepad,theproblemissolved.Incaseofexcessivewearandthinningofthebrakepads,itisnecessarytoreplacethemintimesoasnottocausedirectcontactbetweenthesteelplateandthebrakedisc,resultinginlossofbrakingeffectanddamageofthebrakedisc.Thebrakedisc,whichisactedbythebrakepadandrotateswiththetire,iscalledthebrakedisc.Usually,theownercanjudgethebrakediscbythesoundofdailybrake,especiallywhenthevehiclehasbeenusedforalongtime,itcanalsobeusedtojudge,forexample,whenthebrakepadrubsagainstthebrakediscfilamentorloudsound,ifthissituationisfound,youcantrytwicemoretopreventitfromoccurring.Whenthebrakepadsarerunninginandoutatthebeginningofinstallation,theheatrecessionofthebrakediscislow,therecoveryperformanceisgood,andthebrakingperformanceofmountainroadsandhigh-temperatureandhigh-speedconditionsisnotreduced.Toacertainextent,itimprovesthesafetyofvehicles.Itisverysuitableformountainroadarea,highwayandotherroadconditions!
See more information
Brakesarenowdiscbrakesanddrumbrakes,andmanyoftheoldercarsarefrontandreardrums.Nowadays,manycarsarediscbrakedbothfrontandrear.Becausethediscbrakehasbetterheatdissipationthanthedrumbrake,itisnoteasytoproducethermalrecessionundertheconditionofhigh-speedbraking,soitshigh-speedbrakingeffectisgood.Theprincipleofthebrakediscisthatthemainsourceofthebrakeisfriction.Byusingthefrictionbetweenthebrakepadandthebrakedisc(drum)andthetireandtheground,thekineticenergyofthevehiclemovingisconvertedintotheheatenergyafterfriction,andthecarstops.Agoodbrakingsystemcanprovidestable,sufficientandcontrollablebrakingforce,andhasgoodhydraulictransmissionandheatdissipationabilitytoensurethattheforceappliedbythedriverfromthebrakepedalcanbefullyandeffectivelytransmittedtothemainandsub-pumps,andtoavoidhydraulicfailureandbrakingdeteriorationcausedbyhighheat.Materialdeterminesthelevelofbrakingandwearrate,likethebrand-newsharpmajorityofcarownersreflecttheabnormalbrakingnoiseisbecauseofthematerialoftherearbrakepad,afterreplacingtheimportedbrakepad,theproblemissolved.Incaseofexcessivewearandthinningofthebrakepads,itisnecessarytoreplacethemintimesoasnottocausedirectcontactbetweenthesteelplateandthebrakedisc,resultinginlossofbrakingeffectanddamageofthebrakedisc.Thebrakedisc,whichisactedbythebrakepadandrotateswiththetire,iscalledthebrakedisc.Usually,theownercanjudgethebrakediscbythesoundofdailybrake,especiallywhenthevehiclehasbeenusedforalongtime,itcanalsobeusedtojudge,forexample,whenthebrakepadrubsagainstthebrakediscfilamentorloudsound,ifthissituationisfound,youcantrytwicemoretopreventitfromoccurring.Whenthebrakepadsarerunninginandoutatthebeginningofinstallation,theheatrecessionofthebrakediscislow,therecoveryperformanceisgood,andthebrakingperformanceofmountainroadsandhigh-temperatureandhigh-speedconditionsisnotreduced.Toacertainextent,itimprovesthesafetyofvehicles.Itisverysuitableformountainroadarea,highwayandotherroadconditions!
Causes of Brake Drum Cracking
Causes of Brake Drum Cracking
Time of issue : 2019-08-21 08:40:00
Brakedrumisalsocalledbrakepot.Brakedrumisakeypartinthebrakesystemofautomobiles.Thequalityofbrakedrumdirectlydeterminestheeffectofself-braking,andevenrelatestothesafetyofdriving.Therefore,itisveryimportanttoselectaqualifiedbrakedrumforautomobiles.Belowisasmallbraidtoletyouknowwhatcausesthebrakedrumcracking?Duringthebrakingprocess,becauseofdryfrictionandhighfrictionforce,thebrakedrumoftenbecomesoverheatedandreddened.Atthistime,workersoftenpourtapwateronthebrakedrumtoreduceitstemperature.Thebrakedrumrubscontinuouslyandintenselytoproduceheat,whichmakesitssurfacetemperaturerise.Usingtapwatertoreducethetemperatureofbrakedrumhasplayedaroleinquenching,whichincreasesthelocalhardnessofthesurface,internalstressandcoldbrittleness.Atthesametime,duetotherepeatedactionoftangentialforce,localcrackinitiationoccursatthesurfacelayerofmassivecarbidesandinclusions.Withtheeffectofirregularalternatingimpactforce,thecrackpropagationisaccelerated.
See more information
Brakedrumisalsocalledbrakepot.Brakedrumisakeypartinthebrakesystemofautomobiles.Thequalityofbrakedrumdirectlydeterminestheeffectofself-braking,andevenrelatestothesafetyofdriving.Therefore,itisveryimportanttoselectaqualifiedbrakedrumforautomobiles.Belowisasmallbraidtoletyouknowwhatcausesthebrakedrumcracking?Duringthebrakingprocess,becauseofdryfrictionandhighfrictionforce,thebrakedrumoftenbecomesoverheatedandreddened.Atthistime,workersoftenpourtapwateronthebrakedrumtoreduceitstemperature.Thebrakedrumrubscontinuouslyandintenselytoproduceheat,whichmakesitssurfacetemperaturerise.Usingtapwatertoreducethetemperatureofbrakedrumhasplayedaroleinquenching,whichincreasesthelocalhardnessofthesurface,internalstressandcoldbrittleness.Atthesametime,duetotherepeatedactionoftangentialforce,localcrackinitiationoccursatthesurfacelayerofmassivecarbidesandinclusions.Withtheeffectofirregularalternatingimpactforce,thecrackpropagationisaccelerated.
Why does the brake drum fail in operation?
Why does the brake drum fail in operation?
Time of issue : 2019-08-21 08:41:00
Intheuseofautomobilebrakedrum,ifthefailureofbrakedrumoccurs,itwillbringusdanger.Whatcausesthefailureofbrakedruminoperation?Nowlet'sgettoknowitwithXiaobian.Samplingandanalysisoffailurebrakedrum(includinglongitudinalcracking,creepcrackingandhardspotbrakedrum),theworkingenvironmentofbrakedrumisrelativelybad,undertheimpactthermalstresscausedbyfrequentbraking(sentencebrakingisequivalenttoimpactthermalstress),inonecase,therateofheatingorcoolingisgreaterthan93ortherateofheatingandcoolingisfastandHeatingissmallanduniform,andheatshockoccurswhentemperaturecrossesover102incastings.Becausethebrakedrumheatdissipationconditionsaresmall,leadingtotemperaturerise.Whenthetemperaturereachesabout730C,ifthestabilityofpearliteissmall,itwilldecompose,volumewillexpandandcausephasechangestress.Ifthepeakvalueofthesuperpositionofthediurnalstressandthermalstressexceedsthethermalfatiguestress,thermalfatiguecrackingwilloccur.Similarly,ifthethermalfatiguestressexceedsthethermalfatiguestress,thermalfatiguecrackingwilloccur.Atthistime,theenvironmentalhistoryisbadorthethermalconditionispoor,andthetemperaturerisesabovetheeutectoidtransformationtemperaturetoformaustenite.Understrongcoldconditions,suchaswatercoolingorstrongwindcooling,hardeningphasessuchasmartensite,bainiteorsorbitewillbeformed.Thisiswhythefailurebrakedrumcracksandformshardspotsonthesurfaceatthesametime.Because.
See more information
Intheuseofautomobilebrakedrum,ifthefailureofbrakedrumoccurs,itwillbringusdanger.Whatcausesthefailureofbrakedruminoperation?Nowlet'sgettoknowitwithXiaobian.Samplingandanalysisoffailurebrakedrum(includinglongitudinalcracking,creepcrackingandhardspotbrakedrum),theworkingenvironmentofbrakedrumisrelativelybad,undertheimpactthermalstresscausedbyfrequentbraking(sentencebrakingisequivalenttoimpactthermalstress),inonecase,therateofheatingorcoolingisgreaterthan93ortherateofheatingandcoolingisfastandHeatingissmallanduniform,andheatshockoccurswhentemperaturecrossesover102incastings.Becausethebrakedrumheatdissipationconditionsaresmall,leadingtotemperaturerise.Whenthetemperaturereachesabout730C,ifthestabilityofpearliteissmall,itwilldecompose,volumewillexpandandcausephasechangestress.Ifthepeakvalueofthesuperpositionofthediurnalstressandthermalstressexceedsthethermalfatiguestress,thermalfatiguecrackingwilloccur.Similarly,ifthethermalfatiguestressexceedsthethermalfatiguestress,thermalfatiguecrackingwilloccur.Atthistime,theenvironmentalhistoryisbadorthethermalconditionispoor,andthetemperaturerisesabovetheeutectoidtransformationtemperaturetoformaustenite.Understrongcoldconditions,suchaswatercoolingorstrongwindcooling,hardeningphasessuchasmartensite,bainiteorsorbitewillbeformed.Thisiswhythefailurebrakedrumcracksandformshardspotsonthesurfaceatthesametime.Because.

About us

Introduction
Honor
Culture
Events

 

Products

Brake disc
Brake drum
Air pump

 

News

Company

Industry

 

Contact us

Contact
Message

 

Friendship Links

Longkou brake disc
Brake disc supplier
Shandong brake disc

Brake disc manufacturer

 

Longkou Jinzheng Machinery Co., Ltd.  All Rights Reserved     Lu ICP No.05043603      Power by www.300.cn