|
pheyden (Automotive)
30 Jan 10 12:28
I have a project to reproduce rocker arms from early Fiat 4 cylinder OHV motors.
The ratio is 1.45:1, and the rocker will be fitted with a bronze bushing where it rides on the shaft. I have heard that EN8 (SAE 1049) or EN19 (SAE4140) could be used. In either case I would like to have the rocker body to have some ductility with the adjuster end and wear pad hardened for increased wear resistance.
Are there any other options?
Paul - http://files.engineering.com/getfile.aspx?folder=0c1fe9a4-97ef-4184-93f5-19
TVP (Materials)
1 Feb 10 10:36
EN19/4140 sounds like a good option to me. The whole part could be quenched and tempered to achieve a reasonable balance of strength and ductility, while the adjuster end and wear pad areas could be locally hardened by induction or flame in order to achieve a higher hardness surface zone. Q&T would probably be in the 32-39 HRC range, with surface hardness ~ 55-60 HRC after induction or flame heating.
字串2
CoryPad (Materials)
1 Feb 10 12:23
There are many options, but likely you are limited by quantities. Are you making 10, 1000, 1 million? If it is either of the first two, then TVP gave you excellent advice. If it is the latter, then there are several other choices available.
（Click：）
|
Add TO Favorites
