极速快三

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Customers can refer to the following technical standards and standards of the company to design precision casting products.
- TOLERANCES (unit: mm)
I recommended tolerances


Nominal size
--10
10-- 30
30 -- 100
100 -- 300
300 -- 1000
Straightness
General accuracy
0.12
0.18
0.27
0.40
0.60
High-precision
0.08
0.12
0.18
0.27
0.40
Roundness
General accuracy
0.18
0.27
0.40
0.60
0.90
High-precision
0.12
0.18
0.27
0.40
0.60
Parallelism, perpendicularity, symmetry
General accuracy
0.18
0.27
0.40
0.60
0.90
High-precision
0.12
0.18
0.27
0.40
0.60
Coaxial degree
General accuracy
0.18
0.27
0.40
0.60
0.90
High-precision
0.12
0.18
0.27
0.40
0.60

I recommend the size tolerance:
Nominal size Tolerance (general accuracy) Tolerance (general accuracy)
Less than 3 ±0.200 ±0.100
3------6 ±0.240 ±0.120
6------10 ±0.260 ±0.130
10------16 ±0.270 ±0.140
16------25 ±0.290 ±0.150
25------40 ±0.320 ±0.160
40------63 ±0.350 ±0.180
63------100 ±0.390 ±0.200
100------160 ±0.440 ±0.220
160------250 ±0.500 ±0.250
250------400 ±0.550 ±0.280
400------630 ±0.600 ±0.320
630------1000 ±0.700 ±0.350

 

No less than 0.5 degrees angle tolerance:
The minimum aperture casting D = Phi 2
Through hole D > Phi 7, length L = 3D; D < Phi 7 hole length, L = 2D
Blind D > Phi 7, depth of L = 2D; D < Phi 7 blind hole depth, L = D
- cast fillet
Round R = 0.3, R = 0.5 fillet
The minimum wall thickness
General 1 mm, part of up to 0.6 mm
The surface roughness
Non ferrous metals: 1.6 m ~ 3.2 m
Black metal: 3.2 m ~ 6.3 m
The overall size and weight of castings:
This profile is generally not more than 1400 * 600 * 600mm, the weight is less than 40kg

The material selection:
] can provide casting materials include: aluminum alloy (Al Mg alloy, Al Li alloy, copper alloy (containing beryllium bronze alloy), stainless steel (including precipitation hardening stainless steel) and nickel base alloy, cobalt based alloys, iron-based alloys, etc.. The following is a common material for the user reference:

Aluminium alloy
Alloy code ZL101(A), ZL104, ZL105(A), ZL114A, ZL201(A), ZL205A ZL301, ZL303, ZL401, ZL402
Alloy grades ZAlSi7Mg(A), ZAlSi9Mg, ZAlSi5Cu1Mg(A), ZAlSi7Mg1A, ZAlCu5Mn(A), ZAlCu5MnCdVA, ZAlMg10, ZAlMg5Si1, ZAlZn11Si7, ZAlZn6Mg
Copper alloy
Copper ZCu99.7 ZCu99.5
Aluminium bronze ZCuAl10Fe3
Beryllium bronze ZCuBe0.5Co2.5 ZCuBe0.5Ni1.5 ZCuBe2.4Co0.5
Brass brass ZCuZn38 ZCuZn40Pb2 ZCuZn16Si4 ZCuZn31Al2
Steel and stainless steel
Structural steel ZG35Cr13 ZG30CrMnSi.
Deformed super heat resistant alloy Cobalt based solid solution Stellite6B
Ni based solid solution Inconel600
Stainless steel Martensite ZG1Cr13 ZG2Cr13
Austenitic type ZG0Cr18Ni9 ZG1Cr18Ni9Ti ZG0Cr17Ni12Mo2
Austenite ferrite ZG0Cr22Ni5Mo3N
Precipitation hardening ZG0Cr17Ni4Cu4Nb 17-4PH 15-4PH
The casting quality standards:
] casting classification, grading and the chemical composition, mechanical properties, surface quality, internal quality compliance HB963-90, HB5312-85, HB5430-89, HB5480-91, RZLB1-86 and other standard of.
The production cycle
After the common casting products in the contract after the entry into force of 4 to 6 weeks to complete the mold production and delivery of qualified samples. Special products separately.
Note the order of investment castings:
] to do a good job in the parts of the structure process of review work (higher dimensional accuracy and surface roughness is fine, the shape of the casting more and more complex, the casting cushion more hours and even more so), so as to make casting design and material selection more reasonable, easy guarantee of the quality of casting, reduce casting production cost budget, avoid because of design problems caused delays the production time and pay more costs. (in the course of the problem, contact us, negotiate with our foundry Engineers).
Length and thickness tolerance (mm)
Size range General tolerances Special tolerance
0-6 +/-0.10 +/-0.08
6-10 +/-0.13 +/-0.10
10-18 +/-0.16 +/-0.13
18-30 +/-0.20 +/-0.16
30-45 +/-0.25 +/-0.20
45-62 +/-0.30 +/-0.25
62-87 +/-0.35 +/-0.30
87-125 +/-0.45 +/-0.35
125-175 +/-0.50 +/-0.45
175-250 +/-0.60 +/-0.50
250-400 +/-1.00 +/-0.80
 

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