JB/T 7161-1993 Heat treatment parts for rock drilling machinery and pneumatic tools

This standard specifies the technical requirements, inspection rules and test methods for heat-treated parts of rock drilling machinery and pneumatic tools. This standard applies to heat-treated parts of rock drilling machinery and pneumatic tools, excluding non-ferrous metal and powder metallurgy heat-treated parts. Where there are no special requirements in product drawings or technical documents, this standard shall be followed. JB/T 7161-1993 Heat-treated parts of rock drilling machinery and pneumatic tools JB/T7161-1993 Standard download decompression password: www.bzxz.net

Level 5
Level 1
JB/T 7161-93
Figure 2 Carbon tool steel network carbide rating chart (500×)Level 6bzxZ.net
Level 2
Level 3
JB/T7161-93
Level 4
Figure 3 Pearlite rating chart after annealing of alloy tool steel (500×)Level 1
Level 2
Level 3
Level 5
JB/T 716193
Level 4
Level 6
Level 1
Level 3
JB/T7161-93
Alloy tool steel network carbide rating chart (500×)Level 2
Level 4
Level 1
JB/T7161--93
Figure 5 Tool steel martensite rating chart (500×) (fine needle martensite, needle length ≤1.5mm)Level 3
(Needle martensite, needle length>2.5~4mm)Level 2
(Fine needle martensite, needle length>1.5mm)Level 4
(Needle martensite, needle length>46mm)
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.