简介：摘要：在耐磨钢球领域内，有两大类钢球运转于球磨机或半自磨机里，一种是锻轧钢球，一种是铸造钢球，都属于研磨类钢球，适用于矿山、建筑、冶金、化工、水泥等不同领域内，两种钢球既有共性也有不同，最大的不同就是其密度不同。本文分析锻（轧）钢球与铸造钢球的密度影响。

简介：中国海关总署3月8日公布的数据显示，中国2月未锻轧锏及铜材进口量为35．2万吨，环比减少20％，同比增加3．5％。1-2月未锻轧铜及铜材进口量为79万吨，同比增加9．8％，进口均价为每吨4．89万元，上涨13．1％。

简介：温锻的使用前面我们已经讲到过在钣金加工过程中．冲孔、拉伸时对材料施加的应力可以在被加工材料的屈服强度以下．与其相比，锻压加工的压缩力如果达不到被加工材料屈服强度的3-5倍，就不能使材料充填到模具内腔的边边角角。

简介：2Dand3Dfiniteelementanalysisofathreestateforgingsequence;Atechnologyforcoldforgingofhelicalgearwithcrowningusingelasticdeformationofdie;[Analysisoftheelasticcharacteristicsofforgingdieforthecoldforgeddimensionalaccuracy;ComparisonofwearresistantMMCandwhitecastiron;Computer-aideddiedesignforaxis-symmetriccoldforgingproductsbyfeatureelimination

简介：Mechanicalsurfacepreparationofslugsincoldforging,Methodforsuppressingthesurfacecrackingincoldforging,Optimizedproductqualityandtoollifeincoldforgingbyprobabilisticsimulation,Overviewofcoldforgingtechnology,PrecisionMultioperationalColdForgingofthePowderRings,StrengthEvaluationofAluminumAlloyBoltbyNano-IndentationHardnessTest,SurfacePreparationforColdForgingbyMechanicalCoating.

简介：StudyofinfluenceofomnidirectionalcompressionstressesandhotplasticdeformationonweldingoffragmentsofSwarfbars；Testanalysisofenhancedlightweightaluminiummaterials;TheinfluenceofthemartensitictransformationonthehichtemperatureplasticityoftheNi-Al-Cuβintermetallicphase；ThetemperaturedependenceoftheanisotropicNdFeBfalvicatedbysinglestagehotdeformation;Thermo-mechainicalTreatmentwithMulti-directionUpsettingforImprovementofSuperplasticityinSUS304;

简介：Observationsofbarrellinginaluminiumsolidcylindersduringcoldupsettingusingdifferentlubricants;Observationsonfractureinaxi-symmetricandthree-dimensionalcoldupsettingofbrass;Parallelprocessingof3Drigid-viscoplasticfiniteelementanalysisusingdomaindecompositionandmodifiedblockJacobipreconditioningtechnique;ParameterstudyintothefrictionweldingoftheintermetallicTiAIandthealloyTi6AI4V

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简介：EvaluationoftribologicalcharacteristicsonColdforgingdiebypress-inpunchtest;Experimentalandanalyticalcvaluationforelasticdeformationbehaviorsofcoldforgingtool;Fast,precise&highlyflexible;Faultdetectioninacoldforgingprocessthroughfeatureextractionwithaneuralnetwork;Improvementofforgingprocessofa3Dcomplexpartwithrespecttodamageoccurrence;

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简介：Astudyonprecisioncoldforgingprocessimprovementsforthesteeringyokeofautomobilesbytherigid-plasticfinite-elementmethod；Alloydesigningofhighstrengthsteelsforhotforging；Analysisofthefrictionandwearbehavtourofnotworktoolsteelforforging;Applicationof3DhotforgingprocesssimulationforV6enginecrankshaft;AZ80andZC71/SiC/12pcloseddietorglngsforautomotiveapplications:technicalandeconomicassessmentofpossiblemassproduction

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简介：<正>2005年7月21日财税[2005]119号各省、自治区、直辖市、计划单列市财政厅(局)、国家税务局,新疆生产建设兵团财务局:经国务院批准,自2005年8月1日起取消税号为81110010未锻轧锰、锰废碎料、粉末的出口退税政策。具体执行时间按《出口货物报关单[出口退税专用]》上海关注明的出口日期为准。特此通知。

简介：Influenceofretrogressionandreagingonfiacturetoughnessof7010aluminiumalloy,OpenDieForgingPresseswithManipulators,Optimalpreformdesignforthefreeforgingof3Dshapesbythesensitivitymethod,Passschedulealgorithmsforhotopendieforging,Threedimensionalonestepfiniteelementanalysisforfreeforginganditsexperimentalvalidation(intelligentforgingprocessforslabstretching-V).

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简介：该怎么办呢？助四郎很困惑。好不容易来到大坂．如今还有什么好犹豫的呢？虽然这么想，却总也下不了决心。心中所想之事太过荒诞无稽，正正经经地去谈恐怕谈不妥，甚至或许还会遭到怀疑被轰走。可这也没办法。想归想，这本就是十分难办的事。别说谈了，连该如何开口都不知道，真是叫人头疼。所以．助四郎才在店门口来回徘徊。