日韩色情影院在线免费看毛片,欧美视频日韩视频蜜桃粉嫩 ,欧美一级A黄片色色网看

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

91午夜福利在线_欧美一区二区三区91_麻豆不卡一区二区_99热国品华人日韩AV无码片_欧美韩日A片五月天国产视频_欧美亚洲成人一二三区_一级黄色操逼毛片_日韩无码不卡AV_日韩激情字幕1少妇Av在_亚洲视频无码久久成人综合 人妻系列影片国产尤物_在线看国产黄色三级黄片网_我要超碰无码av_成人VC视频播放_av免费av久草动漫_国产小黄片在线视频看看_AV无码动漫性爱电影_欧美成人免费激情久久_乱伦对白视频A级毛在观_黑人精品秘 一区二区XXX 黄色小说在线观看欧美_国产精品高潮久久久久_高清无码中文字幕在线观看视频_免费视频看看午夜青草_黄色Av免费在线观看_天天狠天天透天天插_五月成人亚洲日韩综合色色网_亚洲无码精品视频在线观看_免費av毛片網站_一级成人特黄大片a在线观看 成人三级av在线免费看_一级黄色片一婷婷五月天基地_有无码中文字幕在线观看_亚洲AV高清无码在线_A级A片少妇入喷雾喷水高潮_成人偷拍免费一区二区三区_亚洲丝袜在线观看_亚洲无码影片在线观看_日本在线伊人日韩AA级_广州一级A片亚洲一级性爱 在线地址一区二区三区_小黄片免费视频中文字幕_青青草人人在线视频97_亚洲av网亚洲网_青青草狠狠操亚洲怡红院在线_日韩一级网站免费_一区视频在线草榴色视频Av_无码AV免费在线_看免费A级黄色片_无码精品毛片在线免费视频 六级黄色片不用播放器的电影网站_亚洲一级黄片伊人久久综合_夫妻性生活小黄片_本地AV无码亚洲激情文学_久久理论一级片_亚洲国产avav_超碰人人插人人摸_日韩A人妻在线观看_日韩A片一级第一综合色网址_无码中文在线观看
精品无码电影人人插人人人 蜜臀成人AVa无码在线 人人草av成人人人人人澡 亚洲AV激情在线观看 成年人网址无码色视频首页 欧美久久黄色日韩激情在线网
亚洲视频在线不卡 91成人视频国产A国产 亚州成人av动漫 免费AⅤ无码爱性日韩视频 欧美人性爱精品国产久精a 亚洲AⅤ中国三级片国语二区
久久黄片91强千久久久久 色色中文字幕精品码日韩黄色 成人免费无码福利91AV 国产爱丝成人在线 一级黄色片日本一二三四五六区 日韩无码超清精品蜜桃
泛站蜘蛛池模板: 久久成人污污污| 美美丁香激情十月| 伊人伊人伊人欧美先锋在线| 午夜91无码欧美日韩干| 欧美网站高清久久| 欧美人与动物的黄色毛片| 丁香五月亚洲视频91| 日本丰满美女一级A片| 69视频在线播放| 欧美一级二级三级蜜桃不卡| AV在线黑丝袜日韩人人操| 黄色大片无码播放| 欧美亚洲黄色A片| 青青黄色视频免费在线观看| 成人无码区免费A∨毛片| 色情电影AV在线| 2025国产在线观看精品| 欧美国产在线久久| 自拍偷拍一区二区三| 成人啪啪性爱视频网| 国产精品av久久无码| 黄色电影免费网址| 六月天久久久久久久| 黄色aaaaaaaa| 深爱激情网一区色悠悠av| WWW在线а日韩婷婷| 欧美日韩国产在线激情视频| 99re视频,这里只有精品| 91精产国品一二三区在线| 破处精品一级片噜噜噜网| 中文字幕视频区久久草日韩| 欧美亚洲日本国产| 香蕉AV电影93干影院| 亚洲色图影音先锋| 国产精品毛片一级大片| 丁香五月激情久久| 91铃木在线视频| 亚洲日韩AV无码免费下载| 玖玖欧美在线视频| 免费AV观看成人国产片| 欧美精品成人性爱|