Yuav ua li cas txiav txim siab seb qhov kev kho cua sov ntawm H13 cov khoom puas tsim nyog

Kev ntsuam xyuas Hardness (48-52 HRC), metallographic tsom xam los xyuas cov qauv tempered martensitic, thiab kev pom zoo ntawm lub cub tawg kub nkhaus thiab batch qhia yog cov txheej txheem tseem ceeb siv los txiav txim seb qhov kev kho cua sov ntawm H13 cov khoom puas tsim nyog. Kev txiav txim kom raug yog xyuas los ntawm kev sib txuas ntawm peb txoj hauv kev no.

 

1. Qhov taw qhia ncaj qha tshaj plaws: Kev Ntsuas Hardness

Txuj Ci Txuj Ci: Tom qab tempering, lub hardness yuav tsum poob ntawm 48 thiab 52 HRC;

Kev Ntsuas Cov Txheej Txheem: Tom qab sib tsoo, ntsuas qhov nyuaj hauv qhov tsis yog - thaj chaw tseem ceeb ntawm cov khoom ua haujlwm (xws li lub hauv paus nozzle) siv lub tshuab Leeb hardness tester;

Logic ntawm Kev Txiav Txim:

<45 HRC: Unqualified, over-tempered, and possibly not completely quenched54 HRC: excessive residual stress, inadequate tempering, and cracking danger;

48–52 HRC: Ua ntej tsim nyog thiab txaus siab rau cov qauv siv.

Tswv yim tswv yim: Txhawm rau tiv thaiv kev txiav txim siab vim qhov txawv txav hauv zos, ntsuas tsawg kawg peb qhov chaw rau txhua daim thiab xam qhov nruab nrab tus nqi.

 

2. Metallographic Analysis (Basis for Authoritative Judgement)

Txais tau / Tsis lees txais Microstructure Nta

Lub koom haum Matrix

Dispersed carbides ntxiv rau cov tempered martensite

Network carbides, coarse martensite, lossis ferrite seem

State of Grain Boundaries

Clear tsis tau oxidation thiab microcracks

Microcracks (overheating), remelted spheres, thiab oxidation ntawm cov nplej ciam teb

Kev faib tawm ntawm Carbides

Cov dej nag uas tsis tu ncua thiab zoo

Network faib, agglomeration, thiab txo toughness

Kev Ntsuas Kev Ntsuas: Siv lub tshuab ntsuas metallographic los tshuaj xyuas cov qauv ntawm qhov loj ntawm 400 × lossis ntau dua thaum nws tau npaj lawm. Cov workpieces tseem ceeb yuav tsum tau kuaj thiab kuaj.

 

3. Kev txheeb xyuas cov ntaub ntawv txheej txheem (Cov txheej txheem Traceability)

Lub qhov cub kub kub Profile: Xyuas kom tseeb tias cov cua kub thiab cua txias yog ua raws thiab qhov kub thiab txias yog tswj thaum lub sij hawm quenching (1020-1050 degree) thiab tempering (550-600 degree) txheej txheem.

Batch Hardness Report: Muab cov qhabnias xeem hardness npog workpieces ntawm ntau qhov chaw rau txhua qhov cub.

Kev Pabcuam Kev Tsim Nyog: Muab qhov kev nyiam rau cov chaw kho cua sov nrog CQI-9 daim ntawv pov thawj, uas nws cov txheej txheem tsis sib xws thiab lawv cov ntaub ntawv muaj meej.

"Hardness ua raws li + tsim nyog microstructure + traceable cov ntaub ntawv" yog ib qho tseem ceeb ntawm lub kaw - voj kev ruaj ntseg system.