9HS74 or K0006
9HS74 or K0006
(OP)
Hi all
i am looking for 9HS74 steel or SKF388K or K0006 is there any othere steels i can use for impact. forgabile in cold form.
regards
i am looking for 9HS74 steel or SKF388K or K0006 is there any othere steels i can use for impact. forgabile in cold form.
regards





RE: 9HS74 or K0006
Cold forging of alloy steels with medium-to-high carbon content (0.45-0.50%) is quite dependent on size and the type and amount of deformation required (upsetting, backward extrusion, wire drawing, drawing and ironing). Some possible standard grades to investigate include SAE AMS6431 and 655M23 (EN36B) or 835M19 (EN39B) according to BS 970. Here is a previous Eng-Tips thread that has some information as well:
http://www.eng-tips.com/viewthread.cfm?qid=173812
RE: 9HS74 or K0006
I would like to cold forge K0006 35mm Diameter and 50mm long as well as 40mm diameter and 50mm long
we receive the steel form Macsteel full annealed and we then Spheroidize the steel.
at present we CNC turn the drill bits but there is better strength in forging as well as taper control.
i would like to cold forge the hole bit inside taper and out side design and then mill the relief on the out side afterwords
do you Know any company that can forge this properly and are there any new advancements in steel in this application for impact and wear as well as holding a 3 micro interference fit of carbide buttons on the head.
i am also looking for a reliable Heat treatment company that can HT and austemper the bits with in spec ( my biggest problem is body failure dew to HT not correct).
Regards Alan
RE: 9HS74 or K0006
If I understand your application, it looks something like this:
http://www.macleanfoggcs.com/products/mining-and-r...
If so, then I would recommend talking to McLean-Fogg (Saegertown) or NSS Industries (part of SPS Technologies):
NSS Technologies, Inc.
9075 General Drive
Plymouth, Michigan 48170
Phone: 734-459-9500
Fax: 734-459-4830
Email: nsssales@spstech.com
I have seen both of these companies manufacture this type of part, and both have the size of equipment needed to make relatively large blanks. Obviously this would require a secondary operation(s) to bring it to final shape. They use horizontal forming machines (commonly called headers or parts formers) that use coiled wire instead of bar as the feedstock.
With regards to austempering, the following are all specialists in this method:
Austemper, Inc.
http://www.austemperinc.com/contact.asp?pid=40
Atmosphere Heat Treating
http://www.atmosphereheattreat.com/
Applied Process
http://www.appliedprocess.com/