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Quality

Quality

Our Investment castings, a formed quality assurance program with ISO9001—2000 Certification insure that the finished products meet the customer's specifications, Our modern facilities for spark spectrometer OBLF, hardness tester, and metallurgical Analysis equipment etc. can assure the mechanical properties and chemical elements according to your request.

we also provide center-machines, CNC, and milling machines for varied machining request Surface treatment would be available as acid pickling, sand blasting, shot blasting, passivation, zinc plating, polishing, powder coating, painted, H.D.G ect.


Investment casting tec. data

Casting tolaerance ISO 8062-1994
Raw Casting Total casting tolerance.
basic dimensions
Over Up to& Casting tolerance grade CT
including
    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
-
0.4
0.6		 0.4
0.5
1		 0.01
0.01
0.01		 0.01
0.01
0.01		 0.01
0.01
0.01		 0.01
0.01
0.01		 0.01
0.02
0.02		 0.02
0.02
0.02		 0.03
0.03
0.03		 0.04
0.04
0.05		 0.06
0.06
0.07		 0.08
0.09
0.09		 0.11
0.12
0.13		 0.17
0.17
0.18		 -
-
0.24		 -
-
0.32		 -
-
0.39		 -
-
0.47
1
1.5
2.5		 1.6
2.5
4		 0.01
0.01
0.01		 0.01
0.01
0.01		 0.01
0.01
0.01		 0.01
0.01
0.02		 0.02
0.02
0.02		 0.03
0.03
0.03		 0.04
0.04
0.04		 0.05
0.06
0.06		 0.07
0.08
0.09		 0.1
0.11
0.13		 0.14
0.16
0.17		 0.20
0.22
0.24		 0.28
0.32
0.35		 0.35
0.39
0.43		 0.43
0.47
0.55		 0.55
0.63
0.70
4
6
10		 6
10
16		 0.01
-
-		 0.01
0.01
-		 0.01
0.01
0.02		 0.02
0.02
0.02		 0.02
0.03
0.03		 0.04
0.04
0.04		 0.05
0.06
0.06		 0.07
0.08
0.09		 0.10
0.11
0.13		 0.14
0.16
0.17		 0.20
0.22
0.24		 0.27
0.32
0.35		 0.39
0.43
0.47		 0.47
0.55
0.63		 0.63
0.70
0.79		 0.79
0.87
0.98
16
25
40		 25
40
60		 -
-
-		 -
-
-		 -
-
-		 0.03
-
-		 0.04
0.04
-		 0.05
0.06
0.06		 0.07
0.08
0.09		 0.10
0.11
0.13		 0.14
0.16
0.18		 0.20
0.24
0.28		 0.28
0.32
0.35		 0.39
0.43
0.57		 0.55
0.63
0.70 		0.70
0.79
0.91		 0.87
0.98
1.14		 1.10
1.26
1.46
60
100
160
250		 100
150
250
400		 -
-
-
-		 -
-
-
-		 -
-
-
-		 -
-
-
-		 -
-
-
-		 -
-
-
-		 0.10
-
-
-		 0.15
0.17
-
-		 0.21
0.24
0.28
-		 0.32
0.35
0.39
0.43		 0.39
0.47
0.55
0.63		 0.59
0.67
0.79
0.91		 0.83
0.95
1.10
1.26		 1.02
1.18
1.38
1.58		 1.30
1.50
1.73
1.97		 1.65
1.93
2.21
2.52
Angle tolerance
Angle Normal Premium
±1° ±0.5°
±1° ±0.5°
±1° ±0.5°

Design Notice

Shape design: the casting design have the necessary to improvement the shape to fit the investment casting shape, even if the components for same purpose, owing to shape or frame improvement properly,it will more helpful to produce the high quality products with the cheapest way.

To avoid the wall thickness change rapidly, otherwise, it will easy cause bend and crack.
To keep the wall thickness equalization, otherwise, it will easy cause bug inside.
To avoid sharp point.
To avoid the wall thickness over central in some area
To avoid sharp angle
Hole Design
D>Ø7:H=3D
D<Ø7:H=2D
(注)D≥Ø2		 D>Ø7:L=2D
D<Ø7:L=1D
(注)D≥Ø2
But in some special condition ,it's possible to make the hole even more small and deep and bend
Radius of Angle
Minimum R 0.3 Minimum R 0.5

The Minimum wall thickness: 1.5mm commonly, it’s possible to reach 0.8mm in somewhere.

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