南京Iron casting products

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Thefactorsinfluencingthequalityofironcastingsareasfollows

1.设计technologyfironcastings.inordertoavoidorreducethecompositionsegregation.deformation，裂纹和缺陷-铸造，itisnecessarytoconsidertherationalityofdesignfromtheperspectiveofcastingalloyandcastingprocesscharacteristicsinadditiontodeterminingthegeometryandsizeofironcastingsaccordingtoworkingconditionsandmetalmaterialproperties.

2.Reasonablecastingtechnologyisneeded.thatistosay，铸件按结构、重量和尺寸，castingalloycharacteristicsandproductionconditions，一对一表面，成型和芯制作方法，选择肋，冷，riserandgatingsystemshouldbesetreasonably.inordertoprotectandobtainexcellentironcastings."。

3.原材料的质量，如金属、耐火材料、燃料、助熔剂、改性剂、铸造砂、型砂粘结剂、铜层压板材料标准、铁渣、针孔、渣夹杂、砂粘合剂、whichwillaffecttheappearancequalityandinternalqualityofironcastings，及系列砂的质量，theironcastingswillbescrapped.thefourthistheprocessoperation.weshouldformulatereasonableprocessoperationprocedures，改进工艺，改进工艺。

在生产过程中，thequalityofcastingsshouldbecontrolledandinspected.firstofall，itisnecessarytoformulateprocessrulesandtechnicalconditionsfromrawmaterials，auxiliarymaterialstocontrolandinspectionofeachspecificproduct.eachprocessisstrictlycontrolledandinspectedaccordingtotheprocessrulesandtechnicalconditions.afterthat，thequalityofthefinishedcastingswasinspected.reasonabletestingmethodsandsuitabletestingpersonnelshouldbeprovided.generally，fortheappearancequalityofdedicatedserviceironcastings，thesurfaceroughnessofcastingscanbejudgedbycomparisonsamples；finecracksonthesurfacecanbeinspectedbycoloringmethodandmagneticparticlemethod.

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