| | |  
 
Overview
History
Gallery
PPT download
 
product gallery
product Guide
+ Investment casting
-what is investment casting
-design guide
-investment casting process
+ Die casting
-what is die casting
+ Sand casting
-what is sand casting
+ ADI
-what is ADI
+ Forging
-what is forging
+ Stamping
-what is stamping
+ CNC machining
-what is CNC machining
+ Laser cutting
-what is laser cutting
 
FAQs
Engineering center
+Surface finish
+Machining
+Package
+Design software
+Material standards
+Assembly
+Application
For OEM
For R&D project
For large volume
Case study
 
New products
Company news
Trade show
With customer
 
 


 
 
  AIA Group
  ARC on Global Sources
  Currency
  Material price
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 © 2009 ARC INDUSTRIES INC.  ISO9001:2000  Legal Notice 鲁ICP备07021537号
Designed by Expectec.com