Shot blasting/texture standard

GarethW · Jun 8, 2010

I need to shot-blast a texture on an aluminium die-casting. Can anyone recommend an internationally recognised standard for specifying the grade or texture? Preferably one that's easily regocnised by Chinese suppliers. Thanks!

Forum

donnole · Jun 11, 2010

Usually you specify the bead material and size, the distance from the surface, and the amount of time you're blasting it for.

If you're dealing with China, your best bet is to get a sample of something you feel is acceptable, and provide that sample to match. Otherwise there will be a lot of back-and-forth......

GarethW · Jun 15, 2010

If anyone else is looking for answers on this, here are a full useful replies to my original question over at our LinkedIn group:

I use VDI for plastics. Find attached a comparison for Ra and N. It's never been an issue for communicating with any international supplier.

VDI3400 Ra = AA = CLA ISO1302 Rt
0-45 Âµm Âµinch N3-N10 Âµm
----- ----- ----- ----- -----
0 | 0.1 | 4 | N3 |
1 | 0.11 | 4.4 | |
2 | 0.12 | 4.8 | |
3 | 0.14 | 5.6 | |
4 | 0.16 | 6.4 | |
5 | 0.18 | 7.2 | N4 |
6 | 0.2 | 8 | |
7 | 0.22 | 8.8 | |
8 | 0.25 | 10 | |
9 | 0.28 | 11.2 | |
10 | 0.32 | 12.8 | |
11 | 0.35 | 14 | N5 |
12 | 0.4 | 16 | | 1.6
13 | 0.45 | 18 | |
14 | 0.5 | 20 | |
15 | 0.56 | 22.4 | | 3.2
16 | 0.63 | 25.2 | |
17 | 0.7 | 28 | |
18 | 0.8 | 32 | N6 | 5
19 | 0.9 | 36 | |
20 | 1 | 40 | |
21 | 1.12 | 44.8 | | 7.5
22 | 1.26 | 50.4 | |
23 | 1.4 | 56 | |
24 | 1.62 | 63 | | 12
25 | 1.8 | 72 | N7 |
26 | 2 | 80 | |
27 | 2.2 | 88 | | 16
28 | 2.5 | 100 | |
29 | 2.8 | 112 | |
30 | 3.2 | 125 | N8 | 20
31 | 3.5 | 140 | |
32 | 4 | 160 | |
33 | 4.5 | 180 | | 25
34 | 5 | 200 | |
35 | 5.6 | 224 | |
36 | 6.3 | 250 | N9 | 37
37 | 7 | 280 | |
38 | 8 | 320 | |
39 | 9 | 360 | | 46
40 | 10 | 100 | |
41 | 11.2 | 448 | |
42 | 12.6 | 500 | N10 | 60
43 | 14 | 560 | |
44 | 16 | 640 | |
45 | 18 | 760 | | 85
Click to expand...

and

Hi Gareth,

For Chinese suppliers, you can easily refer to VDI and YickSang (for your reference, you can visit YickSang's website http://www.yicksang.com/en/Info/about1.asp ).
YickSang is a professional texturing company who has establised very good repuation in China and well recognized globally.

Wish this be helpful for you!
Click to expand...

and

Hi,
Clicked the link to also mention VDI - but I see I've been beaten to it. Rubert & Co make a nice little pocket gauge that is easily understood by clients, designers and producers alike. Take a look at http://www.rubert.co.uk/SitePictures/Type_013_800.jpg - they also produce Shot and grit-blasting comparators http://www.rubert.co.uk/SitePictures/Ty ... 18_800.jpg which might be more appropriate in this case.
Click to expand...

I'll probably buy one of those comparators. They are pretty useful actually - I have a similar kind of thing for specifying machining roughness. The table posted above looks also quite handy. I will have to convert it to a more "easy to read format", though!

Shot blasting/texture standard

GarethW Chief Clicker Staff Member

donnole New Member

GarethW Chief Clicker Staff Member

Share This Page

Shot blasting/texture standard

GarethW Chief Clicker Staff Member

donnole New Member

GarethW Chief Clicker Staff Member

Share This Page

Log in

Register

Useful Searches