Renewable Design for Aluminium Alloy Gravity Casting - Aluminium Alloy CNC Machining Product – RMC Foundry

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Renewable Design for Aluminium Alloy Gravity Casting - Aluminium Alloy CNC Machining Product – RMC Foundry Detail:

China OEM custom Aluminium alloy CNC machined products with services of customized casting, heat treatment, surface treatment and testing.

CNC Precision Machining Capabilities
Facilities	Quantity	Size Range	Annual Capacity	General Accuracy
Vertical Machining Center (VMC)	48 sets	1500mm × 1000mm × 800mm	6000 tonn or 300000 pieces	±0.005
Horizontal Machining Center (VMC)	12 sets	1200mm × 800mm × 600mm	2000 tons or 100000 pieces	±0.005
CNC Machine	60 sets	Max turning dia. φ600mm	5000 tons or 600000 pieces

Precision machining combined with precision casting can be indeed considered as precision manufacturing. Though steel investment casting process is called as precision casting which indeed can obtained neat shape casting, however, that doesn’t mean it doesn’t need any secondary machining. Furthermore, the lost wax casting process applied in common industrial field has still stayed at low but economical level which is so far from so called neat shape casting.

Comparison of Different Casting Processes
Items	Sand Casting	Permanent Mold Casting	Die Casting	Investment Casting	Chemically Bonded Shell Mold Casting
Typical dimensional tolerances, inches	± .010″	± .010″	± .001″	± .010″	± .005″
Typical dimensional tolerances, inches	± .030″	± .050″	± .015″	± .020″	± .015″
Relative cost in quantity	Low	Low	Lowest	Highest	Medium high
Relative cost for small number	Lowest	High	Highest	Medium	Medium High
Permissible weight of casting	Umlimited	100 lbs.	75 lbs.	Ounces to 100 lbs.	Shell ozs. To 250 lbs. no-bake 1/2 lb. – tons
Thinnest section castable, inches	1/10″	1/8″	1/32″	1/16″	1/10″
Relative surface finish	Fair to good	Good	Best	Very Good	Shell good
Relative ease of casting complex design	Fair to good	Fair	Good	Best	Good
Relative ease of changing design in production	Best	Poor	Poorest	Fair	Fair
Range of alloys tht can be cast	unlimited	Aluminium and copper base preferable	Aluminum base prepferable	Unlimted	Unlimited

RMC investment casting foundry came from a precision machining factory with more than decade of precision machining experience. Our precision machining workshop has been equipped with advanced 4-axes machining centers, CNC turning machines, CNC milling machines and necessary grinding mills, versatile turning lathes, milling machines and drilling and tapping machines. In order to keep the supply of high quality raw castings and expand our manufacturing capability, we just established our own steel investment casting foundry.

Capabilities for Casting at RMC
Casting Process		Annual Capacity / Tons	Main Materials	Casting Weight	Dimensional Tolerance Grade (ISO 8062)	Heat Treatment
Green Sand Casting		6000	Gray Cast Iron, Ductile Cast Iron, Cast Al, Brass, Cast Steel, Stainless Steel	0.3 kg to 200 kg	CT11~CT14	Normalization, Quenching, Tempering, Annealing, Carburization
Resin Coated Sand Casting (Shell Casting)				0.66 lbs to 440 lbs	CT8~CT12
Lost Wax Investment Casting	Water Glass Casting	3000	Stainless Steel, Carbon Steel, Alloy Steel, Brass, Aluminium, Duplex Stainless Steel, Cast Iron	0.1 kg to 50 kg	CT5~CT9
				0.22 lbs to 110 lbs
	Silica Sol Casting	1000		0.05 kg to 50 kg	CT4~CT6
				0.11 lbs to 110 lbs
Lost Foam Casting		4000	Gray Iron, Ductile Iron, Alloy, Carbon Steel, Stainless Steel, Brass, Al	10 kg to 300 kg	CT8~CT12
				22 lbs to 660 lbs
Vacuum Casting		3000	Gray Iron, Ductile Iron, Alloy Steel, Carbon Steel, Stainless Steel	10 kg to 300 kg	CT8~CT12
				22 lbs to 660 lbs
High Pressure Die Casting		500	Aluminium Alloys, Zinc Alloys	0.1 kg to 50 kg	CT4~CT7
				0.22 lbs to 110 lbs

▶ Equipment for Precision Machining Components:
• Convertional Machining Machines: 20 sets.
• CNC Machines: 60 sets.
• 3-Axis Machining Center: 10 sets.
• 4-Axis Machining Center: 5 sets.
• 5-Axis Machining Center: 2 sets

▶ Precision Machining Capabilities:
• Max Size: 1,500 mm × 800 mm × 500 mm
• Weight Range: 0.1 kg – 500 kg
• Annual Capacity: 10,000 tons
• Accuracy: As per standards: …. or on request. Minimum ±0.003 mm
• Holes to ±0.002 mm dia.
• Flatness, Roundness and Straightness: As per standards or on request.

▶ Available Process:
• Turning
• Milling
• Lathing
• Drilling
• Honing, Grinding.
• Washing

▶ Available Ferrous Metal Materials for Precision Machining Components:
• Cast Iron including gray iron and ductile iron
• Carbon Steel from low carbon steel, medium carbon steel and high carbon steel.
• Steel Alloys from standard grades to special grades on request.
• Aluminum and their alloys
• Brass and Copper
• Zinc and their alloys
• Stainless Steel, Duplex, Corrosion-resistant Steel, High-temperature Steel.

▶ General Commerial Terms:
• Main workflow: Inquiry & Quotation → Confirming Details / Cost Reduction Proposals → Tooling Development → Trial Casting → Samples Approval → Trial Order → Mass Production → Continuous Order Proceeding
• Leadtime: Estimatedly 15-25 days for tooling development and estimatedly 20 days for mass production.
• Payment Terms: To be negotiated.
• Payment methods: T/T, L/C, West Union, Paypal.

China CNC Precision Machining Company
Precision CNC Machining Factory