Chongqing Dayou Surface Technology Co., Ltd._Railway,Wind power,Zinc-nickel Infiltration Invention patent owner

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ABOUT US

Zinc-nickel Infiltration Invention patent owner

Chongqing Dayou Surface Technology Co., Ltd. founded in 2007 is a high-tech business engaged in the R&D and production of new materials, new equipment and new technologies related to ferrous metal surface modification.So far, we have obtained the title of National Intellectual Property Advantage Enterprise

HOT PRODUCTS

Using effect of Dacromet rust-proof fasteners on the Hainan West Ring Railway
Using effect of Dacromet rust-proof fasteners on the Hainan East Ring Railway
Using condition of wind power tower Dacromet rust-proof bolts
Using condition static powder paint sprayed rust-proof fasteners at Shiziyang subsea tunnel of Guangzhou-Shenzhen-Hong Kong Expr
Using effect of zinc-aluminum multicomponent thermochemcial treatment rust-proof fasteners
Using effect of static powder paint sprayed rust-proof fasteners on Hangshen Railway Changsha Bay Grand Bridge
Using effect of zinc-aluminum multicomponent thermochemcial treatment rust-proof fasteners
Using effect of hot-dip galvanizing rust-proof finger-type plate system in Chongqing Straddle Type Light Rail Line 2
DY-101 Simply Supported T-Beam Pedestrian Steel Beams

NEWS CENTER

重庆大有表面技术有限公司参加2019年中国西部跨国采购洽谈会

2020-04-17 09:53

《2019年中国西部跨国采购洽谈会》西部跨采会是陕西省人民政府主办的三大展之一，已连续举办七届，累计共有80个国家和地区。1900多家国际知名大型采购商和世界500强企业参加。已成为陕西对外开放合作与服务“一带一路”建设的新平台。本届跨采会是在新中国成立70周年“一带一路”深入推进的背景下举办的行业盛会，将围绕自贸区推进，进口商品、现代服务业、跨境电商、名优农产品等设置专题展区，展览面积超过40000平米。公司总经理任玉中在展会中公司联合中铁武汉电气化局集团公司合作展出的展台中国铁路工程集团有限公司总经理、党委副书记、执行董事陈云参观我公司展台；

Hand in Hand, Thank You for the New Year Conference of 2017

2017-02-08 10:36

Thenewyearisfullofnewgoalsandpursuits.Thehopeful2017hasstridedtowardsus.Lookingbackonthepast2016,therearestruggles,perseverance,joy,harvest,andeveryhard-workingyou.OnJanuary25,2017,at3p.m.,ChongqingDayouandRongchangDayouFootballFriendshipTournamentwasinfullswing.Inthecheersofcheerleadersonthesidelines,thetwoteamswillfightbravelyonthegreenfield.Thisisnotonlyapassionateandenthusiasticgame,butalsoashowofperseverance,tenacityandcourage.Italsoshowsustheperseveranceofunitingandadvancinghandinhand. Intensefootballfriendship Cheerleaders At5:30p.m.,theNewYearConferenceofChongqing/RongchangDayouSurfaceTechnologyCo.,Ltd.openedwarmly.ChongqingDayouandRongchangDayouallgatheredtogethertocelebratethefestival.Aseachofthesmilesthatgrewupin2016withBigOnesblossomedontheprojectionscreenonebyone,colleagueschantedtheirnamesonebyone.WhenallthesmilesconvergeintoalargenumberofLOGO,theannualmeetingalsousheredinthefirstsmallclimax. Thankyouverymuch. Afterthewarmstart,GeneralManagerRenYuzhongdeliveredaNewYearspeech.Thespeechsummarizedtheachievementsofthecompanyinthepastyear,gavefullaffirmationtotheworkin2016,thankedallthestafffortheireffortsinthedevelopmentofthecompany,alsoputforwardtheobjectivesforthecompany'sbusinessdevelopmentin2017,andextendedfestivegreetingsandblessingstoallstaff. AddressbyRenYuzhong,GeneralManager AdvancedEmployeesin2016Subsequently,thecompanycommendedtheadvancedemployeesin2016,andcalledonallcolleaguestolearnfromthem,fulfilltheirdutiesintheirrespectivepositions,developteamspirit,andworktogetherforthefutureofmost. Sharingfeast GeneralManagerandSpecialAwardWinnerWuChangyong Thankyouin2016.In2017,wewillworktogethertocreateanothermiracle.

What are the factors that cause metal rust in the rust treatment

2016-06-21 09:57

(1)atmosphericrelativehumidityAtthesametemperature,theatmosphericwatervaporcontentandthepercentageofwatervaporsaturatedcontent,calledrelativehumidity.Inarelativehumiditybelowthemetalcorrosionrateisverysmall,buthigherthanthatofrelativehumidity,thecorrosionspeedsuddenlyincreased.Thisrelativehumidityiscalledthecriticalhumidity.Thecriticalhumidityofmanymetalsisbetween80%and50%,andthesteelisabout75%.TheeffectofatmosphericrelativehumidityonCorrosionofmetalisthebiggest.Whentheairhumidityishigherthanthecriticalhumidity,themetalsurfacewillappearwaterfilmordropsofwater,iftheatmospherecontainingharmfulimpuritiesdissolvedinwater,theelectrolytemembranedrops,aggravatecorrosion. (2)airtemperatureandhumidityTherelationshipbetweenairtemperatureandhumidityaffectsthecorrosionofmetal.Herearesomeofthefollowing:first,theatmosphericwatervaporcontent,withtheincreaseintemperatureandincrease;second,thehightemperaturetopromotecorrosion,especiallyinthehumidenvironment,thehigherthetemperature,thefasterthecorrosionrate.Whentherelativehumidityislow,theeffectofthetemperatureonthecorrosionisnotobvious,butwhenthetemperatureishigherthanthecriticalhumidity,theamountofcorrosionincreasesrapidly.Inaddition,ifthereisadifferencebetweentheatmosphereandthemetal,thetemperatureislowinthemetalsurfaceoftheformationofcondensationwater,butalsoleadtorust. (3)corrosivegasesCorrosivegaspollutionintheair,withthegreatestimpactofsulfurdioxideonmetalcorrosion,especiallytheharmespeciallytosteel,copperanditsalloys.Sulfurdioxideintheatmosphereismainlyderivedfromthecombustionofcoal.Atthesametime,thecombustionproductsofcarbondioxidealsohasacorrosiveeffect.Corrosivegasesmixedintheatmospherearoundtheplant.Suchashydrogensulfide,ammonia,hydrochloricacidgasandsoonarethefactorstopromotethecorrosionofmetal.Ofcourse,theatmosphereofoxygeninthemetalcorrosionisthemostcommon,andatanytimeanywhere,itisself-evident. (4)otherfactorsTheatmospherecontainsalotofdust,suchassmoke,ash,chlorideandotheracid,alkaliandsaltparticles,someitselfiscorrosive,orwatercondensationnuclei,arealsofactorssuchascorrosion,corrosionofmetalchloridesareconsideredas"enemies".

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