Ford's Cadmium Plating process

[Steve Plucker]

The following article describes Ford's Cadmium plating process of brake shoes (and more than likely other cad plating items) starting on page 3 to 4.

http://www.plucks329s.org/pdf/brakes...hoe_lining.pdf

Interesting.

Pluck

[burner31]

Having beem a plater for over 20 years this was an interesting article to read. But we would always bake the items after plating to relieve hydrogen embrittlement, I wonder if they knew about hydrogen embrittlement back in the day?

[Synchro909]

Originally Posted by burner31

Having beem a plater for over 20 years this was an interesting article to read. But we would always bake the items after plating to relieve hydrogen embrittlement, I wonder if they knew about hydrogen embrittlement back in the day?

I suspect not. In the 1970's (I think but it may have been earlier), Kenworth trucks here had a nasty habit of certain blots loosing their heads. In one yard, an observant worker noticed a couple of bolt heads under one of the NEW trucks. Upon investigation, it was found that Hydrogen embrittlement had caused the heads to come off some of the bolts holding the steering boxes to the chassis. Either Kenworth were hopelessly incompetent or the phenomenon wasn't known. I prefer to think the latter.

[Mike V. Florida]

Originally Posted by burner31

Having beem a plater for over 20 years this was an interesting article to read. But we would always bake the items after plating to relieve hydrogen embrittlement, I wonder if they knew about hydrogen embrittlement back in the day?

Help me out. Would embrittlement play a significant roll in the case of brake shoes, bolts/fasteners I understand but brake shoes? (I read that the phenomenon was discovered in 1875)


Has anyone heard of the shoes cracking for any reason?

[Synchro909]

Originally Posted by Mike V. Florida

Help me out. Would embrittlement play a significant roll in the case of brake shoes, bolts/fasteners I understand but brake shoes? (I read that the phenomenon was discovered in 1875)


Has anyone heard of the shoes cracking for any reason?

Wow, that makes Kenworth look pretty foolish!

[40 Deluxe]

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Originally Posted by Synchro909

Wow, that makes Kenworth look pretty foolish!

Or it could have been a case of counterfeit bolts (some supplier selling Kenworth cheap bolts with a name brand stamped in the heads).

[burner31]

I would not think that the embrittlement would have much negative effect on the brake shoes on a 40 hp vehicle, but when you get to hi-powered vehicles and aircraft...yes.

[Synchro909]

Originally Posted by 40 Deluxe

Or it could have been a case of counterfeit bolts (some supplier selling Kenworth cheap bolts with a name brand stamped in the heads).

Could be but I would have thought their quality cotrol should have picked it up.