日韩黄色毛片AV手机版免费 ,五月激情网亚洲色图,九九热久久99国产盗摄蜜臀

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

国产操逼免费视频播放_亚洲日韩精品无码专区_婷婷六月在线视频_97香蕉久久夜色精品国产_日韩性爱无码国产二级黄片_中文一级A片韩国精品无码_黄色成人性交电影在线_亚洲 欧美 小说 国产 图片_三级中文久久av成人激情_欧美日韩黄色一级片 91五月天蜜桃久草视亚洲欧美_一级欧美一级日韩片1_国产制服自拍丝袜_国产av激情欧美激情自拍_成人无码另类AV_一区二区成人电影_精品人妻无码一区二区色欲产成人召_久草免费久久草免费的_国产成人亚洲综合AV婷婷_黄色一区免费婷色五月天 日韩免码一级免码视频_精品国产高清无码_在线三级av成人AV无遮挡_喷浆一二三区无码在线观看视频_亚洲人成激情在线播放国_三级黄片免费看国产一区_亚洲日韩在线精品视频_中国一级黄色视频_人人人人人人操_婷婷综合五月天AV性性 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 日韩不卡毛片在线播放网站_国产无码网站久色无码_欧美成人深夜无码久久久_毛片一级在线观看_无码日韩中文人妻_91精品一区二区三区久久_成人色情毛片丝袜A片_日韩一区二区三区无码_久草免费Av超碰在线播_亚洲欧美自拍另类在线 AV亚洲一区二区三区_A片高清无码免费片_成人黄色小说电影_久草视频免费在线看_无码成人AAAAA毛片_Av无码中文不卡_自偷自偷二区自拍偷拍第1页_黄色一级AV电影_少妇视频网站doi高清无码_日韩乱码人妻无码中文字幕
五月丁香国产激情自拍 成人超碰欧洲熟女 a一级A一片超碰移动成人 日韩黄色三级片在线观看 免费无码黄动漫在线二区 动漫精品在线无码
欧美爱爱动态伊人网视频 亚洲日韩欧美中在线 国产成人精品久久 国产精品久久亚洲不卡动漫 精品国产成人Av在线免 日韩一级片黄片免费视频
黄色五码视频网站 97人妻无码免费视频 久久亚洲电影五月色激情 91影视久久久久久久 人人澡视频一区二区在线 日韩成人版一级片
泛站蜘蛛池模板: 国产成人三级电影| 三级成人久久海角av高清| 在线看伊人网络欧美色色网| 久久香蕉99青青草av| 国产精品久久无码人妻无码| 亚洲av自拍久草福利| 日韩精品在线免费观看一区二区三区| 现在也可以直接观看成人黄色| 亚洲最大精品一区二区在线| 久久伊人成人网| 97超碰在线天天| 日本a片高清一区| 激情网页中文字幕| 国产中文高清天天操操打打| 中日韩一级a片| 亚洲无码不卡视大象AV| 欧美色极品综合一级大黄| 日本成人A片成人人妻欧洲| 国产精品视频网特级片A片| 久久免av高清欧美A电影| 成人性爱电费免费观看| 99视频在线色福利在线| 日本精品成人无码a v在线| 伊人伊在线综合黑丝袜无码| 日韩丝袜制服在线| 免费的国产古装A片| 成人片免费一级| 亚洲激情成人婷婷色在线| 91操在线视频| 亚洲三级片免费看| 一本色道无码不卡在线观看国产情| 小格式合集亚洲无码| 久久久久久久成人免费视频| 欧洲成人无码网站| 欧美精品一页日韩美精品av| 非洲A级毛片韩日色av| a片在线免费观看视频| 丝袜av福利在线观看| 日韩成人洗澡免费视频| 手机视频免费在线观看成人| 人人模人人看黄色色呦呦|