Description
Casted Steel Parts As Cast Metal Component And Casting Iron Accessory
Casted Steel Parts Is To Cast Liquid Metal Into The Cavity Of The Die Which Is Suitable For The Shape Of The Part. After Cooling And Solidification, The Blank Corresponding To The Part Drawings Can Be Obtained.
Cast Metal Component Design: In Order To Ensure The Working Performance And Mechanical Properties Of The Castings, Considering The Casting Process And Alloy Casting Properties Of The Castings Structure Requirements. Whether The Structure Design Of Castings Is Reasonable Or Not Has a Great Influence On The Quality, Productivity And Cost Of Castings.
Casting Iron Accessory Main Problems And Requirements Of Design
The Layout Of The Parts In The Box Body And The Relationship With The Parts Outside The Box Body Should Be Considered First In The Design Of The Box Body. For Example, The Shape And Size Of The Box Body Should Be Determined By The Lathe According To The High Requirements Of Two Pinnacles. In Addition, The Following Problems Should Be Considered:
(1) Meet The Requirements Of Strength And Stiffness. It Is An Important Problem To Satisfy The Strength Of The Box Parts With Large Force, But For Most Of The Box Parts, The Main Index To Evaluate The Performance Is Stiffness, Because The Stiffness Of The Box Not Only Affects The Normal Work Of The Transmission Parts, But Also Affects The Working Accuracy Of The Parts. The Automatic Selection Of Castings Is Included.
(2) Heat Dissipation And Thermal Deformation. The Frictional Heating Of The Parts In The Box Changes The Viscosity Of Lubricating Oil And Affects Its Lubrication Performance. The Increase Of Temperature Causes The Thermal Deformation Of The Box, Especially The Thermal Deformation And Thermal Stress With Uneven Temperature Distribution, Which Has a Great Influence On The Accuracy And Strength Of The Box.
(3) Reasonable Structure Design. For Example, The Arrangement Of Fulcrums, The Arrangement Of Reinforcements, The Location Of Openings And The Design Of Connecting Structures Should Be Conducive To Improving The Strength And Stiffness Of The Box.
(4) Good Technology. Including Blank Manufacturing, Mechanical Processing And Heat Treatment, Assembly Adjustment, Installation And Fixing, Hoisting And Transportation, Maintenance And Repair And Other Aspects Of The Process.
(5) Good Shape And Small Quality.
Advantage
1, It Can Produce Parts With Complex Shapes, Especially Blanks With Complex Inner Chambers (e.g. Heating Facilities).
2, Wide Adaptability. The Metal Materials Commonly Used In Industry Can Be Cast. a Few Grams To Hundreds Of Tons.
3, Raw Materials Come From a Wide Range Of Sources. The Price Is Low. Scrap, Chips
4, The Shape And Size Of Castings Are Very Close To The Parts, Which Reduces The Amount Of Cutting And Belongs To Less Or No Cutting.
Shortcoming
1, The Mechanical Properties Of Forgings Are Not As Good As Those Of Forgings (Coarse Structure, Many Defects, Etc.)
2, In Sand Casting, Single Piece, Small Batch, Worker’s Labor Intensity Is High.
3, Casting Quality Is Unstable, There Are Many Processes, And The Influencing Factors Are Complex. It Is Easy To Produce Many Defects.
Application
Widely Used: 40-70% Machine Tools For Agricultural Machinery: 70-80% Weight Castings
Materials We Can Choose As Below:
♠ High Quality Carbon Structural Steel: 20, 35, 45, 50, 55, 16Mn, 50Mn
♠ Carbon Tool Steel: T8 , T10
♠ Oil And Pressure Vessel Forging Steel : 16Mn, 20, 15CrMo, 20MnMo, 20MnMoNb, 35CrMo, 12Cr1MoV, 12Cr1MoV(P22), 14Cr1Mo, 20SiMn2MoV, SA-336F11CL3, SA-182F11CL3, SA-266/SA-266M, 25CrNiMo, 30CrMo, SA-336Cr.F22CL3, SA350-LF2, 21/4Cr1Mo
♠ Military Product Forgings: D406(30Si2MnCrMoVE)
♠ Power Station Forging: 26NiCrMoV14-5, 34CrMo1A
♠ Bearing Steel: GCr15, GCr15SiMn, G20Cr2Ni4A, GCr18Mo, 9Cr18Mo
♠ Alloy Structural Steel: 20~50SiMn, 40Cr, 42CrMo, 20~45CrMnMo, 45CrNiMnMo, 37SiMn2MoV, 40CrNiMoA, 40CrNi2MoA, 34CrNi3MoA, 34CrNiMo6, 30CrNiMo8, 20CrNi2MoA, 17CrNiMo6, 30Cr2Ni2Mo, 38CrMoA/A, 25Cr2Ni4MoV, 18Cr2Ni4W,
♠ Metallurgical Machinery Forgings Steel : 55Mn2, 60CrMnMo, 60CrNiMo, YB-15, 9Cr2Mo, 9Cr2MoV, 45Cr3NiMoV, 45Cr4NiMoV, 45Cr5NiMoV, 86CrMoV7, MC3, MC3A,
♠ Abrasive Steel : H13, B2, P20, 718, 5CrMnMo, 5CrNiMo.
