久久久无码人妻系列视频,A级免费视频伊人成人在线,国内自拍第23页

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

一区二区三区欧美激情视频在线观看_黄片网站无码日韩熟女被射_黄片一级a片亚洲在线视频_亚洲av无码免费在线观看_亚洲啊啊啊网站在线_一级黄色电影免费在线播放_一本之道久中文字幕_日本无码免费视频在线观看_亚洲无码偷拍电影_黄色av免费在线 日本在残a视频观看视频_黄色中文字幕视频_99好好干视频久久人人操_成人A级免费视频_少妇色情AAA片_国产一级一级黄色电影_二级黄色视频免费在线观看_欧美一级成年片_A级黄片免费观看视频_经典免费不卡三级 无码毛毛片毛毛片_成人婷婷在线视频_日本不卡一二三区视频_三及片黄色55带着小孩_美女一区污污av_免费一级全黄少妇性色一_A级成人毛片亚洲AV干_一区精品免费电影在线中字图片_嫩草亚洲小泬久久夂_一本色道久久激情图片区网站 91人妻少妇一级性av_日本三级在线免费电影观看_成人美女诱惑日本麻豆午夜_无码一区二区三区免费观看_91女人18毛片水多国产_高清无码网站a成人欧美_日本最新一区二区视频_超碰无码少妇国产色一区_日本黄色一级在线观看_不用播放器可以看的a片 日韩成人A V在线播放_婷婷久久精品婷婷五月色_欧美1级黄片日韩A黄片_91午夜福利影院_女人天堂一区鲁鲁_成人无码一片2片3片_免费观看偷拍黄色视频_久久东京热播欧美日韩爱_欧美日韩日本精品完燕版在线欢看_亚洲无码免费观看 91毛片在线观看_亚洲精品福利免费在线观看_亚洲第一精品动漫_国产精品淫乱电影_91麻豆免费看肏亚洲女人的逼_国产黄色一级片_成人勉费视屏瑟瑟综合网_97写真第一页欧美日韩草草草_全球免费一区二区_勉费观看日本蜜桃色情视频
日韩高清无码不卡AV 免费视频黄片69av在线 日韩无码AⅤ一区 国产精品国产A级 久草中文视频字幕在线观看 一区二区三区四区大黄片
国产精品国产三级国产AⅤ中文 亚洲综合熟女伊人 赤裸美女一区二区 极品小奶头毛片视频 欧美性爱日韩一级影音先锋 激情福利视频AV屄久一
无码av看片一区二区 亚洲有吗在线黄色高情无码 亚洲精品福利视频 哪里有免费的毛片看 av网站在线免费观看 特黄一区二区免费看的黄色网
泛站蜘蛛池模板： 欧美成人在线草| 一区二区色视频精品网站| 久久夜色精品国产欧美乱极品| 欧美成人A级免费大片| 日本a级免费看手机版| 亚洲色图第一区av在线久| 国产成人精品v片免费视频| 99视频在线色福利在线| 婷婷久久激情综合| 欧美日韩超碰日韩旡码| 超碰男人aⅴ天堂东京热| 人人操久久人人草| 专干熟女网站在线观看AV线| 不卡无码AV在线| 日韩手机在线一区二区三区视频观看 | 日韩久草一级在线| 黄色视频一级真人| 日韩国产欧美自拍| 无码A V在线播放| 欧美一区二区三区成人电影| 日韩在线三级久久网中文字幕| 黄色网网站欧美日本免费| 日本a级大片蜜臀99av| 国产乱妇无乱码大黄AA片第1集| 日韩亚洲三级美女精品国产| AA黄色片看看嫩草av| 偷拍激情五月天在线播放视频| 一级中文毛片男女福利av| 小说成人舔视频激情六月天| 激情无码国产91热久久| 成人动漫 中文字幕| 国产黄片在线一级二级三级| 超碰在线观看免费版| 日本免费蜜桃人人操人人一| 欧美亚洲成人日韩婷婷新| 成人一级真人毛片| 人妻综合久久久蜜臀| 国产日产精品一区二区三区介绍| 成人一级免费电影| 在线播放91av| 在线视频无码毛片|