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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

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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
《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
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
(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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