se01短视频日韩无码,性爱av不卡在线视频第1页,老司机永久免费视频网址

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

免费囯产精品A V_制服丝袜A片人妻中文字幕区_成人黄色在线免费观看_熟女无码一区二区播放_人人操人人爱人人色_欧美性爱免费视频在线观看_国产黄A三级三级看三_国产一区二区免费在线观看视频_黄色片xxx免费视频_色屌妞在线视频免费观看 一级无码视频特级黄片免费看_99国产精品人妻人伦_成人av一级网址_一本无码在线观看电影_激情久久网站av五码_欧美性一级黄南区动漫AV在_能看AV在线不卡的网站_美日韩一级美国黄色视频_黄色一极日片午夜福利自慰_国产成人影片av婷婷在线 熟女精品资源超碰公开在线欧_曰韩A级黄片五月天网址国产_三级片电影强奸女人_日本一级特黄大片做受_超碰少妇免费一级片好看_免费一级大片怡春院AV_亚洲日韩在线高清DVD_久草女视频在线观看_找中文字幕一级A片免费在线观看_国产AⅤ无码一区二区 青青草成人免费网站_黄色A级国产毛片一级av_免费黄色视频网站大全免费_免费的av毛片亚洲元无码_男女行为网站视频_人级毛片视频黄色电影_日韩黄色视频a片_91av视频在线_三级片av黄片av_免费国产黄在线观看 黄片免费网站在线观看_亚洲自拍5区乱伦黄片免费看_黄色av免费AV无码看_国产高清视频在线观看97_日本少妇被强奸a片_一级a片在线观看免费观看_黄色三级片视频的黄色三级片_91香蕉视频呜呜呜_日本精品无码午夜福利免费看_成人黄色毛片视频 日韩AV在线互联网_日韩网站免费无码_无码AV免费久久久AV或人_久久久久久久久人人人人操_精品三区视频三级成人毛片_免费欧洲毛片A级视频_成人老司机网站免费_国产91精品欧美_日本精品人妻色一级男女_中东一级特黄片亚洲色无码
成人午夜福利导航免费 欧洲极品五月天AV干在线 av一区久久草特黄a级片 婷婷成人网在线亚洲色视频 人人操欧美三在线操久久 日韩AV无码一本
精品视屏一区一区二区三区 一边吃奶一边做国产无遮挡 成人视频在线观看99一区二区三区 黄色一级A片激情婷婷久久 中日韩高清毛片AV啊啊 在线观看日韩在线
91AⅤ在线爱插射在线 亚洲国产精品一区 日韩综合网站无码一区 在线AI免费AV在线观看 经典无码视频人人干AV肉 日韩欧美一卡二卡三卡
泛站蜘蛛池模板： 国产精品无码一区二区在线观动漫| 青青草免费性爱视频| 国产亚洲99久久精品色| 国产火辣无码福利| 啊啊啊啊啊啊啊在线| 欧洲无码电影五月激情久久| www国铲视频成人黄片A| 成人av无码一区二区三区| 99热这里只有精品在线观看| 色色天小姐91性爱视频| 免费成人a片视频| 偷拍草草草草草草草草草草草草| 久久久久久818视频| 蜜桃亚洲色图日韩欧美中文字幕| 日韩AV免费高清一区二区三区| 中国国产毛片成人在线视频亚| 日本精品国产午夜在线欧美| 少妇A级小视频啊| 黄片观看免费在线| 国产婷婷偷窥自拍照照| 国色情片电影免费在线观看| 欧美成人精品AV就是干| 五月婷婷六月伊人| 国产精品午夜片在线免费观看| 免费日本成人五月色五月| 二级片在线观看视频| 国产私拍正在播放| 伊人激情久久在线观看视频| 五月婷婷视频网色AV小说| 台湾aaa黄成人激情五月| 国产无码h片日韩有码网站| 三级日屄视频久久婷婷AV| 国产精品xx女另类成人网| 精品欧美一二三区| 黄片免费免费免费免费免费黄黄黄 | 成年人在线看黄片视频| 三区第一页在线播放| 日韓精品久久中文字幕自慰| 在线成人黄色亚洲色图狠狠干| 国产无码a级片在线观看| 黄色视频中国操逼吃奶吃逼视频|