NM400 Chemical Chikamu
| Element |
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
B |
CEV |
| Giredhi |
NM400 |
≤0.25 |
≤0.70 |
≤1.60 |
≤0.025 |
≤0.010 |
≤1.4 |
≤0.50 |
≤1.00 |
≤0.004 |
|
NM400 Mechanical Properties
| Steel Giredhi |
Y.S (MPa) |
T.S (MPa) |
Elongation A5(%) |
Impact Test |
Kuoma |
| min |
min |
min |
(°C) |
AKV J(min) |
HBW |
| NM360 |
800 |
1000 |
10 |
-20 |
30 |
320-400 |
| NM400 |
1000 |
1250 |
10 |
-20 |
30 |
360-440 |
| NM450 |
1250 |
1500 |
10 |
-20 |
30 |
410-490 |
| NM500 |
1300 |
1700 |
10 |
-20 |
30 |
450-540 |
Iwo akayerwa kukosha kwesimbi ndiro tensile zvivakwa Rp0.2, Rm uye A50 inopihwa.
Izvo zviyero zvakayerwa (AKV) zvelongitudinal kukanganisa kwesimbi ndiro pa 0 ° C uye -20 ° C zvinopiwa.
Kuomarara kwakakamurwa kuita: Rockwell hardness, Brinell hardness, Vickers hardness, Richwell hardness, Shore hardness, Barinell hardness, Nooul hardness, Weinwell kuoma. Vickers kuomarara kunoratidzwa neHV, Rockwell kuomarara kunogona kukamurwa kuita HRA, HRB, HRC, HRD, Brinell kuomarara kunoratidzwa neHb [N(KGF / mm2)] (HBSHBW) (tarisa GB/T231-1984 ) Haisi pfungwa yakapfava yemuviri kuyera kuomarara kwezvikamu zvesimbi mushure mekuvhara, normalizing uye kupisa neBrinell kuoma nzira mukugadzira.
Iyo indekisi yakazara yemakanika zvivakwa senge elasticity, plasticity, simba uye kuoma kwezvinhu. Kuomarara bvunzo zvinoenderana nenzira dzakasiyana dzekuyedza dzinogona kukamurwa kuita static kumanikidza nzira (senge Brinell kuomarara, Rockwell kuomarara, Vickers kuomarara, nezvimwewo), nzira yekukwenya (senge Mohr kuomarara), bounce nzira (seShore kuomarara) uye micro. kuoma, kuoma kwekushisa kwepamusoro uye dzimwe nzira.
NM400 Sampling Test
| Order |
|
Muenzaniso Nhamba |
Sampling Method |
Test Method |
| 1 |
Tambanudza |
1 |
GB/T2975-82 |
GB228/T-2002 |
| 2 |
Shock
|
3 |
GB/T2975-82 |
GB/T229-1994 |
| 3 |
Kuoma |
1 |
GB/T2975-82 |
GB231-84 |
Kuomarara bvunzo: chigayo kubva 1.0-2.5mm pamusoro pesimbi ndiro, wobva waita bvunzo yekuomarara pamusoro. Zvinowanzokurudzirwa kuti ubvise 2.0mm yekuomarara bvunzo.
NM400 Processing
- simbi yekucheka ndiro inokodzera kucheka kunotonhora uye kupisa kunopisa.Kucheka kunotonhora kunosanganisira kucheka jet yemvura, kucheka, sawing kana abrasive kucheka; Thermal cutting inosanganisira okisijeni mafuta ekucheka moto (zvino kunzi "kutema murazvo"), kucheka plasma uye laser kucheka. .
- nzira yekucheka: kuburikidza neakakodzera maitiro bvunzo, tenzi maitiro akajairwa eakasiyana ekucheka nzira dzesimbi ndiro uye yekucheka ukobvu renji.
- iyo nzira yekucheka murazvo wegiredhi repamusoro kupfeka-inodzivirira simbi uye yakajairwa yakaderera kabhoni uye yakaderera alloy simbi yekucheka seyakapusa, mukucheka kupfeka-inodzivirira simbi ndiro, inoda kuterera kune !! Nekuwedzera kwekukora uye kuoma kwesimbi. ndiro, maitiro ekuputika kwekucheka kunowedzera.Kuitira kudzivirira chizvarwa chekucheka kuputika mundiro yesimbi, mazano anotevera anofanira kuteverwa pakucheka:
Kucheka mutswe: simbi simbi yekucheka mutswe wakafanana nehydrogen induced crack panguva yewelding. Kana simbi yesimbi yekucheka kuputika kunoitika, ichaonekwa mukati maawa makumi mana nemasere kusvika kumavhiki mashomanana mushure mekucheka.Saka, kutsemuka kwekucheka ndekwekutsemuka kwakanonoka, hupamhi uye kuoma kweplate yesimbi yakakura, iyo yakakura kucheka kwekucheka.
Preheat yekucheka: nzira inonyanya kushanda yekudzivirira simbi yekucheka kuputika ndeyekupisa kusati kwatemwa.Pamberi pekucheka kwemoto, ndiro yesimbi inowanzopisa, uye kupisa kwayo kwekutanga kunonyanya kuenderana negiredhi yemhando uye ukobvu hwesimbi yesimbi, sezvinoratidzwa mukati. Tafura 2.Preheating nzira inogona kuva pfuti yemoto, magetsi ekupisa pad yekupisa, inogonawo kushandisa kupisa kwevheni yekupisa.Kuti uone kushandiswa kwepreheating yeplate yesimbi, kutonhora kunodiwa kunofanira kuongororwa pakuwedzera kupisa nzvimbo.
Cherechedza: preheating kunyanya kukoshesa, kuita kuti plate interface ifanane inopisa, kuitira kuti usasangana nemhepo inopisa yenharaunda yenzvimbo yekupisa kwepamusoro.
Low speed cutting: Imwe nzira yekudzivisa kucheka kuputika ndeyekuderedza kukurumidza kwekucheka.Kana iwe usingakwanisi kupisa ndiro yose, unogona kushandisa nzira yekupisa yemunharaunda panzvimbo.Kushandisa nzira yekucheka yakaderera kudzivirira kucheka kuputika, kuvimbika kwayo hakuna kunaka se preheating.Tinokurudzira preheating bhanhire rekucheka neflame gun cavitation kakawanda musati wacheka, uye kupisa kwekushisa kwakakodzera kusvika kune 100 ° C. Iyo yakanyanya kutema kukurumidza kunoenderana nesimbi yesimbi giredhi uye ukobvu.
Chinyorwa chakakosha: musanganiswa we preheating uye yakaderera yekumhanyisa murazvo wekucheka nzira inogona kuwedzera kudzikisa kuitika kwemukana wekucheka makatsemuka.
Zvinoda kutonhora zvishoma mushure mekucheka: kana kucheka kusati kwatanga kana kwete, kunonoka kutonhora kweplate yesimbi mushure mekucheka kunoderedza zvakanyanya njodzi yekucheka crack. gumbeze, uye kutonhora kunononoka kunogona kuitika. Kutonhodza zvishoma nezvishoma kunoda kutonhodzwa kusvika patembiricha yemumba.
Zvinodiwa zvekupisa mushure mekucheka: kuchekwa kwendiro yesimbi isina kupfeka, kupisa (kupisa kwakadzika kupisa) kunotorwa pakarepo mushure mekucheka, iyo iriwo nzira inobatsira uye chiyero chekudzivirira kucheka kuputika. , inogona kunyatso bvisa kushushikana kwekucheka (yakaderera tembiricha tempering maitiro; Moisturizing nguva: 5min/mm)
Kune nzira yekupisa mushure mekucheka, kupisa pfuti, magetsi ekupisa jira uye choto chekuchema chinoshandiswawo pakupisa mushure mekucheka.
Iyo anti-softening properties yesimbi inonyanya kuenderana nemakemikari ayo, microstructure uye nzira yekugadzirisa.Kune zvikamu zvakachekwa zvinopisa, chikamu chiduku, ngozi huru yekunyorovesa chikamu chose.Kana kutonhora kwesimbi kwesimbi kunodarika 200-250 °C, kuoma kwesimbi ndiro kunoderera.
Kucheka nzira: apo ndiro yesimbi iri kucheka zvikamu zviduku, kupisa kunopiwa nemwenje welding uye preheating ichaungana mu workpiece.Iyo duku yekucheka ukuru, ukuru hwekucheka workpiece hakufaniri kuva pasi pe200mm, kana zvisina kudaro workpiece ichaita. vane ngozi yekunyorovesa.Nzira yakanakisisa yekubvisa njodzi yekunyorovesa inotonhora kutema, sekucheka kwejet yemvura.Kana kucheka kwemafuta kunofanira kushandiswa, plasma kana laser cutting isarudzo shoma.Izvi ndezvokuti kucheka kwemoto kunopa kupisa kwakawanda iyo workpiece, nokudaro kusimudza kutonhora kwe workpiece.
Nzira yekucheka pasi pemvura: nzira inobatsira yekudzikisa uye kuderedza chiyero chenzvimbo yekunyorovesa, uchishandisa mvura kune lenga simbi yesimbi uye nzvimbo yekucheka panguva yekucheka.Naizvozvo, ndiro yesimbi inogona kutemwa mumvura, kana inogona kutemwa. nekupfapfaidza mvura kunzvimbo yekucheka.Plasma kana kucheka kwemoto kunosarudzika pakucheka pasi pemvura.Kucheka pasi pemvura kune zvinotevera:
- Kupisa kuduku kwakakanganisa nzvimbo yekucheka;
- Dzivirira kuoma kwechishandiso chese kubva pakuderera;
- Deredza deformation yekucheka workpiece;
- Iyo workpiece inogona kutonhorera zvakananga mushure mekucheka.
Giredhi Kuenzanisa Tafura
Tafura yekuenzanisa pakati peNM400 kupfeka-resisting simbi ndiro uye kunze kwenyika simbi
| WYJ/WJX |
JFE |
SSAB |
DILLIDUR |
SUMIHARD |
| WNM400 |
JFE-EH400 |
HARDOX400 |
400V |
K400 |
NM400 kupfeka-resisting simbi ndiro yepamba brand yekuenzanisa tafura
| WYJ/WJX |
WISCO |
HARD |
Q/XGJ |
JX62 |
| WNM400 |
NM400 |
HARDOX400 |
NM400 |
NM400 |
Application Prospect
Zvinopfuura 5000 matani eNM400 mahwendefa esimbi anoshandiswa kuchenura, loader, bulldozer bucket plate, blade plate, side blade plate, blade plate, crusher liner plate nemapurojekiti ekuvaka blade mumichina yeinjiniya, muchina wemigodhi, muchina wekuchera marasha, muchina wekuchengetedza nharaunda. , metallurgical machines uye mamwe mabhizimisi ekugadzira.
