Cast Iron Surface PanelMainly Suitable For Measurement, Inspection, Marking, Etc. In Industrial Equipment. It Can Also Be Used For Machine Tool Mechanical Assembly, Inspection Of Measurement Benchmarks, Checking The Dimensional Accuracy Or Behavioral Deviation Of Parts, And For Assembly, Welding, And Marking. It Is Also An Essential Basic Tool In Mechanical Manufacturing. The Phenomenon Of Volume Reduction That Occurs During The Liquid, Solid, And Solid Cooling Processes Of Cast Iron Surface Panels Is Called Shrinkage. Therefore, Shrinkage Is A Physical Property Of The Casting Alloy Itself.
The Cast Iron Surface Panel Has Undergone Two Rounds Of Manual Annealing, And Has Characteristics Such As Wear Resistance, High Temperature, And Resistance To Corrosion. Stress Relief Annealing, Also Known As Low-temperature Annealing, Is Used To Remove Stress. This Type Of Annealing Is Mainly Used To Eliminate Residual Stresses In Castings, Forgings, Welded Parts, Hot-rolled Parts, Cold Drawn Parts, Etc. If These Stresses Are Not Eliminated, It Will Cause The Steel Parts To Undergo Deformation Or Cracking Due To Gas Ignition During Aging Or Subsequent Cutting Processes.
It Is Also An Essential Basic Tool In Mechanical Manufacturing. Use Colored Hair For Inspection. The Platform Of Level 0 And Level 1 Shall Have No Less Than 25 Points Within A Range Of 25 Millimeters Square On Each Side, No Less Than 20 Points For Level 2, And No Less Than 12 Points For Level 3. Cast Iron Surface Plate Is A Flat Reference Tool Used For Workpiece Inspection Or Marking. The Platform Installation Should Be Adjusted To Horizontal, With The Load Evenly Distributed On Each Support Point, And The Ambient Temperature (20 ± 5 ℃). Vibration Should Be Avoided During Use. The Working Surface Of The Cast Iron Surface Panel Should Not Have Casting Defects Such As Sand Holes, Air Holes, Cracks, Slag Inclusions, And Shrinkage Porosity.
1、 Cast Iron Surface Panels Should Be Sandblasted, And Non Machined Surfaces Should Be Sprayed With Primer G06-4ZBG51010-87.
2、 During The Casting Process Of Cast Iron Plates, Sand Hole Defects May Occur. As Long As The Correct Method Is Used For Process Compensation, The Defects On The Working Surface Of The Cast Iron Surface Plate Cannot Be Ignored. The Main Defects Of The Cast Iron Surface Plate Include Pores, Sand Holes, Sand Inclusions, Shrinkage Porosity, Etc. The Service Life And Defects Of Cast Iron Surface Panels Are Closely Related. So When Dealing With Defects In Cast Iron Surface Panels, Strict Adherence To Process Requirements Is Required.
3、 During The Production Process Of Cast Iron Surface Panels, There May Be Some Deviation In Theoretical Weight. It Should Be Noted Whether The Deviation Of Cast Iron Surface Panels Affects Their Use. The Design Of General Cast Iron Flat Plates Should Take Into Account Casting Errors And Mechanical Processing Errors. The Weight Error Of Cast Iron Flat Plates Should Generally Not Exceed 10%. When It Exceeds 10%, We Need To Further Evaluate The Quality Of The Cast Iron Surface Plate To Determine Whether It Can Be Put Into Use.
4、 The Cast Iron Surface Panel Undergoes Two Heat Treatments, One For The Blank And One After Rough Machining. The Usual Heating Temperature Is 500-550 ℃, And The Insulation Time Is 2-8 Hours. Then, It Is Furnace Cooled (gray Iron). This Process Can Remove The Internal Stress Of The Cast Iron Surface Panel, But The Structure Of The Cast Iron Does Not Change. If The Temperature Exceeds 550 ℃ Or The Insulation Time Is Too Long, It Will Cause Graphitization And Reduce The Strength And Hardness Of The Casting.
5、 The Thickness Of The Working Panel On The Cast Iron Surface Plate Is Uniform, And The Longitudinal And Transverse Reinforcement Plates Are Evenly Distributed, Making The Bottom Plate Structure Symmetrical, That Is, The Strength Of Each Part Is Equal And The Stiffness Is Increased.
6、 The Material Used For The Cast Iron Flat Plate Is HT200-250 Gray Cast Iron, And The Performance Requirements Are Mechanical Tensile Strength Not Less Than 250Mpa, Hardness HB180-226, Good Carbon Content (2.7%~4.0%), Carbon Mainly Exists In The Form Of Flake Graphite, Gray Fracture Surface, Low Melting Point (1145-1250 ℃), Small Shrinkage During Solidification, Compressive Strength And Hardness Close To Carbon Steel, And Good Shock Absorption.
7、 By Utilizing The Concept Of Strength, The Lifespan Of Each Part Of The Cast Iron Surface Panel Is Made Equal.
8、 The Allowable Casting Defects On The Processing Surface Of Cast Iron Surface Panels Are: 1 Within A Diameter Range Of 200mm, With Dimensions Of 3mm And 2mm, And An Additional 15 Allowed (within A 4000 * 1900 Plane); The Allowable Range Of Defects On Non Machined Surfaces: 1 Defect Is Allowed Within A Diameter Of 100, With Dimensions Of 3mm And 2mm In Diameter.
9、 The Working Face Thickness, Surrounding Thickness, And Rib Plate Thickness Of The Cast Iron Surface Panel Are Cast According To The Drawing Requirements, With Uniform Wall Thickness To Reduce Internal Stress During Casting Shrinkage And Prevent Deformation.
10、 The Dimensional Tolerances, Flatness, And Parallelism Of The Cast Iron Surface Panel (upper Surface) Are Determined According To Relevant Standards.
11、 The Anchor Bolt Holes Of The Large Cast Iron Surface Panel Are Designed According To The Length Requirements. After Installation, The Nuts Cannot Be Higher Than The Bottom Plate Plane, And The Civil Engineering Casting Requirements For The Anchor Bolts Are Submitted. Responsible For The Casting Positioning Of The Anchor Bolts, Supervising The Casting Deviation, And Retesting The Casting Results.
12、 According To The Width Series Dimensions Of The Configured Unit Chassis, Its Length Direction Can Withstand External Forces During Processing, Movement, Lifting, And Installation.
13、 During Installation, Place The Corresponding Machine Tool Adjustment Shim According To The Position Of The Anchor Bolt Hole, Which Can Be Adjusted By 10-15mm. The Anchor Bolt Hole Is Equipped With A Cover Plate.
