Mite chuan chutiang chuan an ngai tlangpuivalve chu a niof stainless steel a ni a, a rust lo ang. A awm a nih chuan steel-ah harsatna a awm thei. Hei hi stainless steel hriatthiam lohna chungchanga ngaihdan dik lo tak a ni a, chu chu thil engemaw takah chuan a rust thei bawk.
Stainless steel hian boruak oxidation do theihna a nei a— .chu chu rust resistance a ni a, acid, alkali leh salt awmna media-ah pawh corrode theihna a nei bawk— .chu chu corrosion resistance tihna a ni. Mahse, a anti-corrosion theihna lian tham tak chu a steel ngeia chemical composition, a venhimna dinhmun, a hman dan leh environmental media chi hrang hrang a zirin a danglam thin.
Stainless steel hi a tlangpuiin:
A tlangpuiin metallographic structure ang chuan stainless steel pangngai hi chi thum-ah then a ni a, chungte chu austenitic stainless steel, ferritic stainless steel leh martensitic stainless steel te an ni. Heng metallographic structure bulpui pathumte hmang hian mamawh leh thil tum bik atan dual-phase steel, precipitation-hardening stainless steel leh high-alloy steel, iron content 50% aia tlem lo te chu an la chhuak a ni.
1. Austenitic stainless steel hmanga siam a ni.
Matrix hi face-centered cubic crystal structure, non-magnetic austenite structure (CY phase)-in a thunun a, a bik takin cold working (leh magnetic property thenkhat a thlen thei) stainless steel hmanga tihchak a ni. American Iron and Steel Institute hi 200 leh 300 series-a number hmanga ruat a ni a, 304 ang chi a ni.
2. Ferritic stainless steel hmanga siam a ni.
Matrix chu a ni taksa lairil cubic crystal structure-a ferrite structure ((a phase)-in a thunun a, chu chu magnetic a ni a, a tlangpuiin heat treatment hmanga tihkhauh theih a ni lo va, mahse cold working hmangin tlem a tichak thei a ni.American Iron and Steel Institute chu 430 leh 446-a chhinchhiah a ni.
3. Martensitic stainless steel hmanga siam a ni.
Matrix hi martensitic structure (body-centered cubic emaw cubic emaw), magnetic a ni a, a mechanical property te chu heat treatment hmanga siamrem theih a ni. American Iron and Steel Institute hi number 410, 420 leh 440 hmanga ruat a ni a, Martensite hian temperature sang takah austenite structure a nei a, room temperature-a rate dik taka a lum chuan austenite structure chu martensite (chu chu hardened)-ah a chantir thei a ni.
4. Austenitic-ferritic (duplex) hmanga siam a ni.
Matrix hian austenite leh ferrite two-phase structure a nei vek a, less-phase matrix chhunga awm zat chu a tlangpuiin 15% aia tam a ni. Magnetic a ni a, cold working hmangin a tichak thei bawk. 329 hi duplex stainless steel pangngai a ni. Austenitic stainless steel nena khaikhin chuan dual-phase steel hian chakna a nei sang hle a, intergranular corrosion leh chloride stress corrosion leh pitting corrosion laka a resistance pawh nasa takin a tha zawk a ni.
5. Ruahtui tlakchhamna hardening stainless steel.
Matrix hi austenite emaw martensitic structure emaw a ni a, precipitation hardening hmangin a khauh thei bawk. American Iron and Steel Institute hi 600 series number hmanga chhinchhiah a ni a, 630 ang chi hi 17-4PH a ni.
A tlangpuiin alloy bakah hian austenitic stainless steel hian corrosion resistance a nei tha hle. Environment corrosive lo zawkah chuan ferritic stainless steel hman theih a ni. Mildly corrosive environment-ah chuan material chu sang For strength emaw high hardness emaw neih a ngai a nih chuan martensitic stainless steel leh precipitation hardening stainless steel hman theih a ni.
Stainless steel grade leh property hman tlanglawn tak tak
01 304 Stainless Steel hmanga siam a ni
Austenitic stainless steel hman lar ber leh hman lar ber pawl a ni. Deep-drawn part leh acid pipeline, container, structural part, instrument body hrang hrang, etc. siamna atan a tha hle a, non-magnetic, low-temperature equipment leh part siam nan pawh hman theih a ni.
02 304L Stainless Steel hmanga siam a ni
Cr23C6 precipitation avanga 304 stainless steel-a intergranular corrosion tendency na tak thlentu ultra-low carbon austenitic stainless steel siam chhuah buaina chinfel nan chuan a sensitized state intergranular corrosion resistance chu 304 stainless steel aiin a tha zawk tih a chiang hle. A chakna tlem zawk tih loh chu property dang chu 321 stainless steel nen a inang vek. Welding hnua solution treatment pek theih loh, corrosion-resistant equipment leh components atan hman a ni ber a, instrument body hrang hrang siamna atan pawh hman theih a ni.
03 304H Stainless Steel hmanga siam a ni
304 stainless steel internal branch hian carbon mass fraction 0.04%-0.10% a nei a, a temperature sang tak performance hi 304 stainless steel aiin a tha zawk.
04 316 Stainless Steel hmanga siam a ni
10Cr18Ni12 steel hmanga molybdenum dah belh hian steel hian medium leh pitting corrosion tihziaawmna kawngah a do tha hle. Tuipui tui leh media hrang hrangah chuan 304 stainless steel aiin a corrosion resistance a tha zawk a, pitting-resistant materials atan hman a ni ber.
05 316L Stainless Steel hmanga siam a ni
Ultra-low carbon steel hian sensitized intergranular corrosion lakah a resistance tha hle a, welded parts leh equipment thick section dimension nei siamna atan a tha hle a, petrochemical equipment-a corrosion-resistant materials te pawh a ni.
06 316H Stainless Steel hmanga siam a ni
316 stainless steel chhungril branch hian carbon mass fraction 0.04%-0.10% a nei a, a temperature sang tak performance chu 316 stainless steel aiin a tha zawk.
07 317 Stainless Steel hmanga siam a ni
Pitting corrosion resistance leh creep resistance hi 316L stainless steel aiin a tha zawk a, hei hi petrochemical leh organic acid corrosion resistant equipment siamna atana hman thin a ni.
08 321 Stainless Steel hmanga siam a ni
Titanium-stabilized austenitic stainless steel, intergranular corrosion resistance tichak turin titanium a dah belh a, high-temperature mechanical property tha tak a nei bawk a, ultra-low carbon austenitic stainless steel hmanga thlak theih a ni. Hun bik, temperature sang emaw hydrogen corrosion resistance emaw tih loh chu hman a tha lo tlangpui.
09 347 Stainless Steel hmanga siam a ni
Niobium-stabilized austenitic stainless steel, niobium dah belhin intergranular corrosion resistance a tichak a, acid, alkali, salt leh corrosive media dang a corrosion resistance chu 321 stainless steel nen a inang a, welding performance tha tak, corrosion-resistant material leh anti-corrosion atan hman theih a ni Hot steel hi thermal power leh petrochemical field-ah hman a ni ber, chu chu container, pipe, heat exchanger, shaft, industrial furnace-a furnace tube siam, leh furnace tube thermometer siam te.
10 904L Stainless Steel hmanga siam a ni
Super complete austenitic stainless steel hi Finland rama OUTOKUMPU siam chhuah super austenitic stainless steel chi khat a ni a, a siam chhuah dan hi a lar hle. , Non-oxidizing acids sulfuric acid, acetic acid, formic acid leh phosphoric acid-ah te corrosion resistance tha tak a nei a, crevice corrosion leh stress corrosion resistance tha tak a nei bawk. Sulphuric acid concentration hrang hrang 70 hnuai lam tan a tha hle°C, leh acetic acid leh formic acid leh acetic acid mixed acid-ah chuan pressure pangngai hnuaiah eng concentration leh temperature-ah pawh corrosion resistance tha tak a nei a ni.
11 440C atanga siam a ni
Hardenable stainless steel leh stainless steel zingah Martensitic stainless steel hian hardness a nei sang ber a, hardness hi HRC57 a ni. A bik takin nozzle, bearing, .phengphehlepvalve a ni core te, .phengphehlepvalve a ni thutna, kawrfual, .valve a ni stems, etc. te pawh a awm bawk.
12 17-4PH hmanga siam a ni
Martensitic precipitation hardening stainless steel, HRC44 hardness nei hian a chakna, a khauhna leh a chhe thei lo hle a, temperature 300 aia sangah pawh hman theih a ni lo°C. Boruak leh diluted acid emaw chi emaw laka corrosion resistance tha tak a nei. A corrosion resistance hi stainless steel 304 leh stainless steel 430 te nen a inang a ni. Offshore platform siam nan te, turbine blade siam nan te, .phengphehlepvalve a ni (valve core, valve seat, sleeve, valve stem te a awm bawk) wait.
In valve a ni design leh selection, system hrang hrang, series, leh grade hrang hrang stainless steel te hi kan tawk fo thin. Thlan dawn hian buaina chu kawng hrang hrang a\angin ngaihtuah tur a ni a, chungte chu specific process medium, temperature, pressure, stressed parts, corrosion, leh cost te hi a ni.
Post hun chhung: Jul-20-2022
