| | |  
 
Overview
History
Gallery
PPT download
 
Casting
+ Investment casting
-what is investment casting
-design guide
-investment casting process
+ product gallery
+ facility gallery
 
 
 
 


 
 
  AIA Group (unitedplants.net)
  Brake Hose (brakehose.net)
  ARC on Global Sources
  Currency (x-rates.com)
  Material price (lme.com )
design guide

  The following information should always be on the
casting drawing:
+ Material - Alloy specification and heat
treatment.
+ Tolerances - General and specific tolerances for liner tolerances, flatness and
straightness, concentricity, angularity, parallelism and perpendicularity.
+ Fillet and corner radii - Specified as a maximum condition only, so tool makers can
eliminate outside radii to facilitate tool construction and reduce cost.
+ Location and amount of machine stock.
+ Surface finish.
+ Casting identification -description and location.
Premium tolerances require additional operations at extra cost and achieve closer tolerances
on selected dimensions only.It is recommended that your design in accordance with the
configuration below, however even tighter tolerance than those on the following chart can be
obtained.
The technical ability of ARC Investment Casting is growing so rapidly that we present an
extension of the list as a guide for larger configurations. Always keep in mind that your
specific configuration and the alloy are the most important criteria in determining
dimensional variation from part to part during production.
The ultimate success of the casting design depends on the communication between the
designer and foundry engineers. When the foundry is properly informed of part requirements,
there is usually a compromise of specifications that will allow for maximum compliance to
print specifications and finish part design.

Tolerance:
1.Concentricity:

External Diameter

3/4"

1"

1 1/2"

2"

Inner Diameter

1/4"

1/2"

3/4"

1"

TIR Eccentricity

0.008

0.010

0.010

0.016

2. Flatness and Straightness: 
It should be remembered that flatness and straightness tolerances deal with bow only and should not be confused with surface irregularity.
Tolerances for flatness and straightness are 0.003---0.0055"/1" and depend on alloy and configuration of casting.
3. Radii:
General Tolerance: 0.016"/1"
Limit Tolerance: 0.005"/1"
4. Angular Tolerance: ≤0.50°
5. Roundness:
Diameter: 1/2”.....1" .......1 1/2"
Roundness Tolerance TIR: 0.010...0.016... 0.024
Allowable tolerance after corrective action:
External Diameter: 1/2”.....1" .......1 1/2" .......2"
Roundness Finished TIR: 0.006...0.008...0.010 ...0.015
6. Hole Tolerance:
Best tolerances for holes are as follows:


Hole Diameter

Limit Tolerance

~ 0.25"

  0.003〞/1〞

~ 0.5"

0.004"/1"

> 0.5"

0.005"/1"

These tolerances apply to round holes, D-holes and square holes.
7. Recommended Tolerances:
For all functional dimensions, the linear tolerance table below should be used. 
For non-functional dimensions, wider casting tolerances will result in a more economical design.


Inches

Millimeters

Dimensions

Tolerance

Dimensions

Tolerance

---0.250

±0.005

----3

±0.100

0.250---0.500

±0.006

3--------6

±0.125

0.500----0.750

±0.007

6--------10

±0.150

0.750----1.250

±0.008

10-------18

±0.180

1.250----1.750

±0.009

18-------30

±0.200

1.750----2.500

±0.010

30-------50

±0.230

2.500----3.500

±0.012

50-------80

±0.260

3.500----5.000

±0.013

80-------120

±0.300

5.000----7.000

±0.014

120------180

±0.350

7.000--10.000

±0.016

180------250

±0.400

10.00—16.000

±0.017

250------400

±0.430

16.00---25.000

±0.018

400------630

±.0460

25.00---40.000

±0.020

630------1000

±0.500

8. Wall Thickness Dimension Tolerance is exceptional, conforms to ISO 8062-1996
Overall Dimension (mm):
Not more than 1400X600X600

Materials:
Stainless Steel ,Carbon Steel, Aluminum Alloy, Copper Alloy, Ni-base Alloy, Co-base Alloy, and Other Steels.

Quality Standards:
American ICI, MIL, Chinese HB963-90 and other Standards. Castings should be used at the request of customers.

The lead time for mould and sample
Samples will be supplied in 4---6 weeks according to the complexity of product.

Weight:

5g-40kg



Copyright (C) 2001-2007 castec.com 鲁ICP备07021537号
West Unit,Villa 12,12 Donghai West Road,Qingdao,China
Tel: 86-532-83895615,83897615,83897232 Fax: 86-532-83897526 E-mail: sales@autosino.com