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Die Casting Process

die casting processCNM Die Casting has the ability to offer various castings including die casting, investment casting, permanent mould casting, and sand casting for a wide range of alloys, including all die-cast alloys, many permanent mold alloys, and many magnesium alloys.

Our manufacturing processes have been accepted by the world casting market as equal or superior to conventional die casting.

Benefits of the CNM Die Casting Process

Better dimensional control

Improved cross parting line tolerances

Reduction in gas porosity

Improved balance properties of finished rotating parts
Use of “cast-in-place” inserts
Improved mechanical properties due to effective alloy modification
Better wear properties due to smaller grain size microstructure
Improved flexibility regarding alloys and types of castings

Machining

CNM Die Casting’s Machining Section utilizes the work cell concept and high-speed flexible machining equipment to complete secondary operations to CNM’s castings so that a part or subassembly is ready to install when it leaves our facility.

CNM Die Casting has evolved and responded aggressively to customer demands for providing high-speed machining and assembly services without initial capital expenditures. By factoring a portion of the cost of the existing equipment into each part, the customer benefits from faster set-ups and minimal initial capital outlays.

CNM Die Casting operates 8 die cast machines, complete in-house die casting mold making and CNC machining in an over 20,000-square-foot facility in DONGGUAN, China.

Our integrated manufacturing capabilities, together with over 100 employees, allow us to be your One-Stop, complete service die caster, and be consistently price competitive, while also maintaining a high standard of quality.

 

Below are Comparison of die casting processes
Metals that can be castMin.and Max mass, kgTolerance
on dim.,%		Surface finish,µ mMin. section size, mmDraft degProduction rate,pcs/hrMin. cored hole,mmPorosity
Sand CastingAluminium
Steel
CI and others		0.03, 100
0.10, 200, 000
0.03, 50, 000		0.09
to
0.03		4
8
8		3
6
3.5		4
to
7		10
to
15		65
Permanent
Mould Casting		Cast iron
Al and Mg		0.01, 50
0.01, 10		0.01
min		25
3		2504.5 to 6
6		4
Die CastingAl
Mg
Zn		0.015, 35
0.015, 35
0.05, 80		0.0015
0.0015		1
1
1		0.8
1.2
0.5		2
2
2		75 to 150

300 to 350

2.5
2.5
0.8		2
Precision
Investment Casting		Steel
Aluminium		0.005, 25
0.002, 10		0.003, to
0.005		1
1		1
0.8		1 to
3		  N/A0.5 to
1.25		1
Shell
moulding		Steel
Cast iron
Aluminium		0.05, 120
0.03, 50
0.03, 15		0.01
to
0.003		6
6
2.5		3.5
3
1.5		2
to
3		30
to
80		3
to
6		1
Centrifugal castingAluminium
Steel
Cast iron		up to
400		0.002
0.004
0.004		0.6
to
3.5		0.6
to
1.2		330
to
50		 N/A1
to
/by