一级A片网站视频,免费观看黄片视频观看,综合天堂伊人在线

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(hào)-1  www.300.cn

精品无码无码无码_免费AV在修三级片网页_无码国产精品一区二区高潮久久_韩日天堂AV免费观看_99久久99这里有免费费精品_精选性爱视频在线播放_蜜桃91av久久久_福利导航VOD第一福利关键词_中文字幕有码人妻二区三区_成人色情黄片性爱综合区 欧美视频第64页_日本美女A∨小电影_谁有有亚洲女人毛片资源_亚洲图片自拍偷拍色就是色欧美_亚洲AV无码影视_亚洲成人电影免费在线观看_国产一级又黄又大_欧美一级视频一区_91av午夜怡春院黄A_日本黄级一级91无码成人 黄片大全直接进入_欧美VA在线看A片网站_无码在线最新视频网_欧美三级免费观看_啊啊啊免费毛片无码黄动漫_成人在线17cao_国产精品久久无码av片_一级色情毛片黄色毛片aaa_查看午夜美女a级黄色视频在线_中国一级无码黄片 日韩AV三级电影天堂_久久一二三四区视频_亚洲四级成人电影在线观看_国产自偷自拍观看_欧美日韩国产1区2区3区_免费看黄色影视激情亚洲_免费一级婬片AA片观看_97人妻综合网91热91_亚洲性爱区在线观看_久久综合久久久久 足疗店一级黄色片_超级碰碰久久少妇av_日本黄色视频高清不卡无码_无码无码国产片观看_国产无码一区二区在线_亚州精品无码aⅴ_丁香五月婷婷Av_激情视频激情电影一级带_无码毛片电影在线观看_无码av观看网站 老鸭窝成年视频在线网_A片一级大全电视屏剧_无码一区二区黑人网站_黄色av手机在线观看_极品AV网站欧美精品成人_看免费在线一级黄片_国产一二三四区在线视频在线_无码十分钟后在线播放视频_高清无码免费看黄_在线免费观看的黄色AV网址
高精黄色毛片黄片三级片 牛牛精品一区二区A 日韩色图综合第一页 人人人人操人人人 日韩成人三上悠亚中文字幕 国产丝袜av伊人不卡
成人免费毛片一级A片 国产精品视频在线观看黄色 激情黄色电影亚洲a人片 人人澡人人看人人澡欧美 中国毛片在线一二三区AV 福利第一视频在线
亚洲无码综合视频 人人艹人人插操在线激情 亚洲AⅤ无码一区二区三区波多野 日韩黄色a片91激情综合 色色色色色综合99 刺激黄片动漫超模av导航
泛站蜘蛛池模板: 欧美成人性自拍日本色免费| 成人特黄色一级片| 亚洲毛片一区二区| 免费观看亚洲黄色片| 色婷婷aV无码在线播放| 小说色欧美视频操| 国产十日韩十亚洲十日本| 成人在线观看黄色视频| 免费看A级视频| 女人一级二级三 电影毛片| 五月激情久久东方av伊人网| 亚洲无码在线视频播放| 亚洲成人网黄片| 国产三级电影在线观看视频| av黄色电影免费看| 国产精品9999| 黄色a片网址1024久久| 婷婷五月天亚洲av| 精品在线91就要草草在线| 日韩美女人妻闺蜜乱码| 日本无码 在线观看| 久久久亚洲有码日韩高网站| 亚洲色图欧美激情| 真实无码在线网站| 啊啊啊啊啊啊啊日韩| 爱爱爱爱爱爱网| 一 区二区日韩视频| 黄色网页无码在线观看| 欧美日成人影视在线观看| 美女AV网站在线观看| 久久美女久久日本色网址| 美国A片基地免费A视频| 亚洲福利在线观看| 日本精品免费视频| 毛片看片资源亚洲色图吧| 欧美性片三区草久免费福利给| 亚洲欧美在我国产A片一区| 日本V中字在线不卡| 无码WWW免费视频网站| 理论电影亚洲一区| 亚洲日韩专区精品99|