精品久久久久无码系列动漫,无码高清观看视频,亚洲熟女av中文字幕男人

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

一级黄片一级的黄片黄色的黄片_久久草淫色视频久草本在线_无码在线观看免费欧美_日本加勒比无码观看_欧洲精品一二三区_亚洲久操97淫秽色情三级片_欧美日韩另类在线_中文字幕国产第一页_男女免费播放器97超碰。_日韩人妻无码二日本一级黄 午夜成人国产av_日韩高清无码久久久久_a在线播放网站不卡_99精區欧美一区二区三区_人人草人人av免费操一操_秋霞AV鲁丝一区二区三区_免费黄色一级小视频_亚洲欧美日韩国综合点击进入_亚洲黄色三级黄色小电影资源_日本一二三区作爱XXXⅩX 亚洲高清中文字幕久色_成人性爱电影网站_国产精品欧美在线_亚洲无码中文av_丰满人妻一区二区三区Av猛交_日韩在线一区视频_国产三级无码超碰91久久_香蕉成人国产在线播放_99re在线视频免费_久久中午字幕国产23页 av人人人人操爱香蕉视频_中文字幕av无码在线_色香色欲综合网无码大毛片_看黄色片大全无打码_国产阿V视频在线观看网址_五月激情成人图片_A片一级操逼在线视频_狠狠干黄色视频嗯啊_手机在线高清无码视频_亚洲蜜桃综合国产精品波多 日韩有码aU欧美日内黄_亚洲无码手机播放一区二区三区_伊人精品免费国产精品s_伊人日韩AV一级A片AAA_在线xx69国产无码性爱片_日韩色色图片色爱精品_a级日韩美干女人逼毛片_97人人操,97人人摸_成人网中文日本电影_久久久久亚洲无码AV尤物黑人 黄色毛夫妻黄色毛片_国内自拍视频无码_成人色情电影在线观看_日本色A一③日本亚洲欧美_做a视频亚洲欧美_黄色AⅤ电影草榴三级片_小说亚洲无码中文字幕在线_久久香蕉成人免费Av_黄色操逼网站99热在线观_天海翼一区二区久久久
色欲av蜜臀av蜜臀av 午夜福利视频高清无码 在线观看A片网站 特黄成人国产精品毛片网站 亚洲性爱视频成人 中文字幕AⅤ在线
国产资源在线观看你懂得 成人影片一区日本无码网站 国产无码一页乱伦无码网 无码性爱视频免费看 日韩精品一区二区AV片在线观看 免费看A级肉片AV黄色网
草免费在线视频 簧片无码电影天堂 手机在线免费观看av 国模吧 一区 视频 成人看的那种黄色视频 日本综合特黄A片性生活视频
泛站蜘蛛池模板： 欧美另类aaaaaaaaaV| 国产精品乱子伦视频潮| 日韩精品性爱亚洲一级性爱| 黄色成人视频爱草| 午夜在线看片想要爱| 国产成人a亚洲精品无码青草在线 一区国产黄片超碰网人人97 | 97人人操人人摸人人| 一级片无码黄色电影在线播放| 日本伊人一级国产丝袜a片| 看免费黄色特级国产免一级片| 一级在线黄色中文字幕视频| 久久免费体验五分钟视频30| 蜜臂AV一区二区| 中文字幕在线综合| 伊人艺术综合影院在线观看视频| 在线观看啊啊啊~| 欧美日韩黃色激情四射A片| 久草网视频99精品| 日韩人妻无码视频综合| 亚洲黄片视频A级给清毛片| 国国产自偷自偷免费一区苹果视频| 亚洲图片综合一区| 欧美尤物精品国产中文| 美国一级特黄片| 午夜黄色一级电影| 视频成人一二区啊轻点插| 色七七成人AV影院| 婷婷AV在线免费看日本A片| 中文字幕成人性电影| 亚洲a片视频黄色带3级国产| 亚洲无码高清at| 激情免费AV激情一婷婷| 成人电影在线看天堂色| 亚洲有码AV在线观看| 亚洲手机中文字幕| 老司机午夜成人香蕉网av| 亚洲精品黄片国产| 免费黄色视频网站无需下载在线播放 | 啊啊啊啊免费在线观看| 亚洲最大成人一区无码| 日韩美女在线精品|