The hardness country relative standard of stainless steel product

The hardness country relative standard of stainless steel product

Rubiginous steel product can be divided by delivery appearance classification for stainless steel board, stainless steel belt, stainless steel canal, stainless steel club, stainless steel silk. If organize classification to be able to divide according to metallographic,be the following 5 sort: Austenite stainless steel, ferrite stainless steel, austenite - ferrite stainless steel, martensite stainless steel and precipitation sclerosis stainless steel.

Stainless steel product can be divided by delivery appearance classification for stainless steel board, stainless steel belt, stainless steel canal, stainless steel club, stainless steel silk. If organize classification to be able to divide according to metallographic,be the following 5 sort: Austenite stainless steel, ferrite stainless steel, austenite - ferrite stainless steel, martensite stainless steel and precipitation sclerosis stainless steel. All sorts of stainless steel material are with anneal, attune dissolve of qualitative, solid, quench or all sorts of different heat treatment position such as temper offer money.

Hardness experiment is a horniness pressure head presses rated condition slow press sample the surface, check impress deepness or dimension next, determine the size of material hardness with this. Hardness experiment is material in mechanical function experiment the the simplest, rapiddest, most the method that implements easily. Hardness experiment dispute is ruinous, material hardness value and tensile strength have similar conversion to concern between the value.

Because tensile test does not facilitate,check, and arrive by hardness conversion intensity is very convenient, because this people is increasing,the ground checks material hardness only and test its strength lesser. Make ceaseless progress of the technology and get rid of the stale and bring forth the fresh as a result of sclerometer especially, a few material that cannot test hardness directly so, if stainless steel provides material of material, stainless steel silk, paper-thin stainless steel,material board is mixed stainless steel strip, check hardness already possibly now directly. So, put in a hardness to experiment to replace the trend of tensile test gradually.

In stainless steel standard, provided cloth, the name of a river in Shaanxi and Henan provinces, safeguard commonly method of experiment of 3 kinds of hardness, determine Hb, Hrb (or Hrc) be worth with Hv hardness, stipulate value of 3 kinds of hardness is measured only firstly can of stainless steel hardness detect method

Stainless steel board, the hardness that stainless steel takes detects
Stainless steel board include hot-rolling board and cold rolling board. The stainless steel that ply is more than 1.2mm board or the hardness test that stainless steel takes uses Rockwell hardness plan, check hardness of Hrb, Hrc. Ply is in the stainless steel of 0.2 ～ 1.2mm board or stainless steel belt uses exterior Rockwell hardness plan test Hrt or Hrn hardness. The stainless steel that ply is less than 0.2mm board or stainless steel belt, use exterior Rockwell hardness plan cooperate diamond to nod anvil, check Hr30tm hardness.

To ply the anneal stainless steel of 0.3 ～ 13mm board, stainless steel belt, also can use Webster sclerometer, test of this kind of instrument is very fast and simple, very comfortable at be opposite material of anneal stainless steel undertakes quick acceptance check-out.

The hardness that stainless steel is in charge of detects
Stainless steel canal includes to receive solder stainless steel canal and cold-drawing stainless steel are in charge of. Internal diameter is more than 30mm, the wall is large the stainless steel canal that is more than 1.2mm, use Rockwell hardness plan, check hardness of Hrb, Hrc. Internal diameter is more than 30mm, the wall is large the stainless steel canal that is less than 1.2mm, use exterior Rockwell hardness plan, check Hrt or Hrn hardness. Internal diameter is less than 30mm, be more than the stainless steel canal of 4.8mm, employ tubal capable person special Rockwell hardness plan, check Hr15t hardness. When internal diameter tubal material is more than 26mm, still can use Rockwell or exterior Rockwell hardness plan the hardness that measures wall of test tube material.

Be in to internal diameter 6.0mm above, the wall is large in 13mm the following anneal stainless steel provides material, can use ｗ - B75 Webster sclerometer, its test is very fast, simple, comfortable the acceptance check-out that does fast nondestructive at providing material to stainless steel.

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