Longkou Jinzheng Machinery Co., Ltd.



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.

Brake disc

VIDEO

___

公司拥有(yǒu)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(yǒu)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。

Events

Establishment, Development, Rapid Development and Strategic Reorganization

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.

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.

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.

Time of issue : 2019-08-21 08:39:00

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

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

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

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?

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