久9久久精品日韩无码,国产理伦片在线观看91,免费一级黄片在线

E-mail：sale@china-huadong.com

English  |  中文版

hddz

ABOUT US

hddz

Ruian Huadong Forging Co., Ltd

Ruian Huadong Forging Co., Ltd. is a comprehensive enterprise integrating forging, alloy die casting, mechanical machining, heat treatment and surface plating. At present, the company has five forging lines (300t-1000t), eight sets of alloy die-casting equipment (280t-1350t), thirty-eight sets of machining equipment, one line for normalizing and tempering mesh belt furnace, two full-automatic lines for electroplating (nickel and stainless steel).
The main products of the company are: auto parts series, forging parts series, alloy die casting parts series, auto trailer parts series, door closer series. There are: trailer ball, connecting rod, spline shaft, fork, swing arm, etc. Our products are exported to Western Europe, America and Southeast Asia.

 

MORE

10+

Incorporation

9001-2000

ISO

30+

certification

1000+

CLIENTS

RECOMMENDATION

OUR STRENGTHS

Based on the technical tenet of "high starting point, high technology, high quality" and the service tenet of "reputation first, quality first", the company has
created a set of high-quality products

Culture

Based on the technical tenet of "high starting point, high technology, high quality" and the service tenet of 

MORE

Network

The company's domestic sales network throughout the country, in line with the purpose of "facing customers

MORE

Certification

Our products such as trailer ball and door closer have passed IS9001-2000 certification...

MORE

Service

Please feel free to contact us!
We will serve you wholeheartedly!

MORE

NEWS

2019-12-28

1、MadeinChina2025InthereportoninvestmentanalysisandProspectForecastofChina'ssuperalloyindustryin2018-2022,CICconsultantmentionedthatinMay2015,theStateCouncilissuedthedevelopmentstrategyofmadeinChina2025,whichwillguidethedevelopmentofChina'sindustryinthenextdecadeasaprogrammaticdocument.ThedocumentproposestofocusonfivemajorprojectsandtenmajorareasaroundthedevelopmentofChina'smanufacturingindustry.Threeofthefiveprojectsinvolvesuperalloy.Amongthe"tenfields",aerospaceequipment,powerequipmentandnewmaterialswillalsoinvolvethecontentofsuperalloy,whichisenoughtoseetheimportantpositionofSuperalloyproductsinthefuturenationalscienceandtechnologydevelopmentandnationaleconomy.
2019-12-27

Intheprocessofhotrolling,theheatandheatconductionofhightemperaturebilletmakethetemperatureofrollrise.Intheopeningareaofhotrolledsectionsteel,becauseofthelargevolumeandhightemperatureoftheforgedbillet,thesurfacetemperatureoftherollincreases.Whenthetemperatureoftherollishigh,thesurfacehardnesswillaffecttherollwearresistance.Whenthesurfaceoftherollisheated,thevolumeexpansionwilloccur,butthetemperaturedifferencebetweentheinsideandoutsideoftherollwillbeformedduetotheloweroveralltemperatureoftheroll,resultingingreaterthermalstress.Aftertherollingmaterialleavestheroll,theheatconductionstops,andtherollsurfacetemperaturedropsaccordingly.Thisstatechangesperiodically,whichiseasytogeneratehotcracks.Therefore,itisnecessarytocooltherollscientificallytokeeptherollsurfacetemperatureinareasonablerange.Yongxinshengsuggeststhefollowingmeasurestocontrolrollcooling:theheattransferefficiencyofcoolingwatercanbecontrolledbymixing3%oilintocoolingwater.Thewaterpressureofcoolingwatershouldbeaslowaspossibleunderthepremiseofwaterflowdensity.Thesteadyflowofcoolingwatertotherollsurfacecanincreasethecontacttimebetweenthetwo,thusincreasingtheheattakenawaybycoolingwaterfromtheroll.Ifthecoolingwatersplashesontheroller,thecontacttimeofthetwoisshortenedandthecoolingislarge.Highwaterflowdensityinspraycoolingareacanobtainhighheatdissipationrate.Whenthespraycoolingareaisarc-shaped,cooltheparallelline.Whentheanglebetweenthespraylineofthenozzleandtheaxisoftherolleris30°,goodcoolingcanbeproduced.Thediameterofthesprayholeofthenozzleshallnotbelessthan3mm.Itisbettertouseflatnozzle.Inordertosplitthecoolingwater,thesurfacefinishofthesprayholeshallbemaintained.Itisbettertokeepthedistancebetweenrollersurfaceandnozzlewithin50-100mm.Thetemperatureofcoolingwatershouldbeaslowaspossible,anditsdegreeshouldbeashighaspossible.Impuritiesinwateraffectthequalityofproductsandrolls.Inordertoremovetheburronthesurfaceoftherollpasscausedbythewearofthescale,ontheonehand,thepressureofthedescalingmachinecanbeusedtoremovethescaleonthesurfaceoftheblanktoalargeextent;ontheotherhand,thehigh-pressureairpipecanbeaddedinfrontoftherollingmilltoblowthescaleatthewaistoftheforgingblank.
2019-12-27

Accordingtothemanufacturingprocess,itcanbedividedintocastingpulley,weldingpulley,doubleplatepressingpulley,forgingpulleyandrollingpulleyforgingpulley.Itisaprocessingmethodthatusesforgingmachinerytoexertpressureonthemetalbilletofpulleytoproduceplasticdeformationtoobtainforgingswithperformance,shapeandsize.Itisoneofthetwomajorcomponentsofforging(forgingandstamping).Themicrostructureisoptimizedthroughthedefectsofascastloosenessinthesmeltingprocessofforgingenergymetal.Atthesametime,themechanicalpropertiesofforgingsaregenerallythesameasthoseofcastingsmadeofthesamematerialduetothepreservationofcompletemetalflowlines.Intherelatedmachinery,theimportantonewithhighloadandsevereworkingconditionsisusuallyforgedexceptforthesimpleshapeofrolledplates,sectionsorweldments.Comparedwiththecastpulley,theforgedpulleyhasitsstructureandmechanicalpropertiesafterforging.Thedeformedpulleyafterhotworkingmakestherawmaterialcrystallize,andchangestheoriginalcrystalandcolumnarcrystalintothecrystalstructurewithfinegrainanduniformsize,whichmakesthestructureinthepulleytighter.Thephysicalpropertiesofthepulley,theappearancesurfaceandcoarsenessoftheprocessedpulleyforgingTheroughnessismorebeautifulandsmooththanthecastingpulley,becausetheprocesscostaccountingismoreexpensivethanthecastingpulley.However,fortheimportanthigh-quality,largecranesorothermodels,pulleyforgingsaremoreoftenselected.
2019-12-27

Whenitcomestoforgingindustry,thekeypointofthepastistoforgeiron.Peoplewillremembertheconceptoffreeforgingasthemainconceptofforging.Inthe1980sand1990s,peoplehaveafurtherunderstandingofforging,anddieforgingistherealconnotationofforging.Forthisreason,theseyearsaroundthedieforgingpeoplestartedadiscussionandinvestment.Overthepastdecade,whatnewdevelopmentshavetakenplaceinforgingindustry,asmallandimportantindustry?Forginghammer-theforginghammerhasdevelopedfromthepastgravitydrophammer,steamairhammer,liquidairhammertothepresentelectro-hydraulichammer.Themainprogressofthisequipmentisenergycontrol,strikestability,guidanceanduse.Atpresent,thereisalsoanautomaticforginghammerforgingproductionline.Screwpress-screwpresshasdevelopedfromthepastmanualscrewhammer,doublediscfrictionpresstotoday'sclutchscrewpressanddirectdrivescrewpress.Thisnewtypeofpressischaracterizedbyhighenergyandcontrollableforce.Inthepast,themainproblemistheimpactonthepowergrid.Atpresent,theproblemisbasicallysolvedbyusingfrequencyconversion.Mechanicalpress-thegreatdevelopmentofmechanicalpressshouldbeinthe1970sand1980s.Itisalsotheproductofmassproductionofforgings.TheautomaticproductionlineofpressistheideaofRussiansandtheexperimentofGermans.Theworld'sfull-automaticforgingproductionlineisinstalledintheforgingplantofDongfengMotorCompanyinChina.Inrecentyears,theproblemsofpressforginghavenotfoundacompletesolution,butpeoplehavefoundthattheextensionofpressforgingframeiscontrollable.Generallyspeaking,thepressshouldextend1mmevery10MNwhenworking.Withoutthiselongation,itisimpossibleforthepresstoachieveforging.

Ruian Huadong Forging Co., Ltd

Production address: NO.119, Chuangxin East Road, Xialin Industrial Zone, Tangxia Town, Ruian City

 

Contact us

TEL:+86-577-65365147    FAX:+86-577-65366147 
E-mail:sale@china-huadong.com

Message
We will serve you wholeheartedly

About us

profile
certificate
culture

network

Products

Forging series

Trailer accessories series

Door closer series

Die casting series

News

Company news

Industry news

 

 

Contact us

Message

Contact us

 

 

hddz

Copyright ? 2020 Ruian Huadong Forging Co., Ltd  All rights reserved.   

浙ICP備19053007號-1  www.300.cn

日本免费久久欧美一级黄大片_亚洲黄色免在线观_AV影院在线91巨乳_国产精品一级黄色视频播放_中字无码蜜桃看一级A片_欧美一级色情片_欧美三级黄色电影_黄片A片草我好爽_AV在线导航超碰黑人_青青草视频分类色 黄色视频三级视频毛片_亚洲第一天堂视频_性交黄色在线视频_超碰97电影成人网址_我想看一级片玖玖中文资源_97视频总站日韩第一页_日韩成人黄片日韩成人黄色_99国模视频a视频免费_午夜网久久久亚洲AV_我要看最黄色一级绿缘片 久草成人av免费在线观看_97欧美日韩三a级毛片_999成人大香蕉_日韩黄色三级片中外A片_久久亚洲成a人在线免费_成人三级片视频播放_欧美黄色大片儿_欧美人与性动交a欧美精品_亚洲自排导航最黄色无码电影_国产A片视频无码精品色色 97福利视频免费在线观看_岛国精品女人av_99精品综合图区_欧美日韩二级片大全_免费一级黄色毛片_日韩无码中文网站_青青草免费AV在线网站_亚洲中文字幕第三页_91素人在线视频_午夜亚洲精品视频免费在线 婷婷五月天激情成人网_欧美三级视频免费AV视屏_人人草人人干97在线视频_性爱无码AV在线线_欧美六月丁香日韩无码成人网_日韩AV成人在线网站_免费好看又黄在线视频_亚洲成人av网址在线播放_欧美日本有码亚洲无码久久久_亚洲伊人在线久久黄A片 第一福利精品导航_欧美VA视频第一Aⅴ网_国产精品交换A级黄色a_草久久av3久福草视频_亚洲成人性爱视频网_黄片免费观看一级高清_岛国av网站在线播放_婷婷五月天四色播放_亚洲在线免费观看麻豆_亚洲视频香蕉导航草
日韩oa小电影色V久 亚洲蝴蝶AV日韩另类第一页 国内自拍偷拍坐爱视频 国产喂奶视频一区 成人av日韩在线 综合色图中文字幕
欧美制服美腿一区 麻豆精品免费毛片区区6 黄色片一及片黄色三区 国产在线无码观看 乱轮视频无码黑人 97色色网页愛av在线
中文字幕三级片专区 美女福利视频网站亚洲 欧美人人操免费七仙女导航 久草久草播放A级淫色片 黑人精品一区二区三区不 欧美黄色性爱网特级a免费
泛站蜘蛛池模板： 亚洲AV永久在线观看更新 | 国产又大又粗又长硬又紧又爽视频| 性情视频网页三严二十一级片| 久久人人香蕉热日操操人妻| 日本色情免费片亚洲无卡| 久久国产一级片亚欧久久| 97精品免费在线观看| 99视频免费在线观看| 国产精品免费公开| 日韩插插综合网高清无码| 无码免费毛片不卡视频视频| 黄色片特级中国射av| 91视频激情性爱| 69av激情免费狂干| 国产在线激情三级a黄片| 欧美A亚洲A日本A中文A| 青青碰激情视频在线| 在线一级黄片伊人久久久国产| a级毛片在线免费看| 日韩亚洲三区图片专区| 大陆一卡精品黄片导航| 久久综合欧美综合色图| 国产片亚洲日本AA片免费| 国产精品久久久2023| 亚洲黄色女真人2| 欧美一级电影久久| 成人性交无码视频| 国产精品无码免费播放| 欧美激情性爱免费观看| 欧美黄色性爱黄色性爱图片| 成人黄色小电影| 在线免费A片视频| 成年人美女黄色毛片网站| 99re这里只有精品12国产| 一级片黄色大片| 日韩精品黄色毛片一区二区三区| 国产福利一级二级| 日本三级久久人人草人人射| 95色热热热热热热| 无码毛片网站三级电影水蜜桃| 91大神AV在线|