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Thefactorsinfluencingthequalityofironcastingsareasfollows

1.itisthedesigntechnologyofironcastings.inordertoavoidorreducethecompositionsegregation，变形，裂纹及缺陷--铸造，itisnecessarytoconsidertherationalityofdesignfromtheperspectiveofcastingalloyandcastingprocesscharacteristicsinadditiontodeterminingthegeometryandsizeofironcastingsaccordingtoworkingconditionsandmetalmaterialproperties.

2.reasonablecastingtechnologyisneeded.thatistosay，按结构、重量和尺寸铸造、castingalloycharacteristicsandproductionconditions，一对一件表面、模塑和芯制作方法选择，并选用肋、冷、riserandgatingsystemshouldbesetreasonably.inordertoprotectandobtainexcellentironcastings.

3.itisthequalityofrawmaterialsforcasting.ifthequalityofmetalcharge，耐火材料、燃料、助熔剂、改性剂、铸造砂、模塑砂粘结剂、覆铜板材料标准、铁渣、针孔、渣夹杂物、粘砂剂、whichwillaffecttheappearancequalityandinternalqualityofironcastings，和系列砂、theironcastingswillbescrapped.thefourthistheprocessoperation.weshouldformulatereasonableprocessoperationprocedures，改进工艺、纠正工艺规程。"。

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

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