Description

Material: ASTM CF*8M
Weight: 5.*2KG
Smelting: Medium frequency furnace
Sand Core Type: NONE
Material of mold: Aluminium
Machining method: CNC machine
Application: Water pump
Heat treatment: Solid solution
Surface Treatment: Acid pickling
Dimensional tolerance: Casting dimension according to CT7, machining dimension accoring to the requirement of drawing
Surface Roughness: Casting surface-Ra*5 machining surface: Ra0.8
Testing equipment: Autocollimatic spectroscope, Mechanical properties - universal mechanical testing machine. Machining: Caliper, dial indicator and roughness of contrast sample piece
Certification: ISO ***1

Note: 1 strictly control between the dry humidity, temperature, wind, and viscosity of coating.
2 to do the operation of the surface layer, transition layer carefully, do moistening slurry comprehensive, sanding in place and dry thoroughly.
3 in the surface sizing agent will never allow module into after sanding.
4 before the next layer of coating system, must go to a layer of redundant float sand.
5 surface layer and transition layer of shell mould shoulds not be too fast drying speed, the drying time shoulds not be too long. To prevent defects such as cracks.
6 operation completes the eye protection and mechanical and electrical equipment operation safety. Production safety without accidents.
7 do operation records (records according to the die set temperature, humidity) on the car shall prevail.