Sanitary (food grade) stainless steel pipe siam leh hman dan tur .
1. Stainless steel pipe fittings atanga lei chunglam atanga thlirletna .
Auger electron spectroscopy (AES) leh X-ray spectroscopy (SPS) method pahnih hmang hian stainless steel fittings chhung leh pawn lam a corrosion resistance hriat theih nan stainless steel chunglam thlirlet theih a ni. AES method-a analysis diameter hi a tlem hle a, chu chu 20nm aia tlem a ni thei a, a bul tanna chu element hrang hrang thliar hran a ni. XPS method analysis hi 10μm vel a ni a, hei hi a kianga lei chunglam elements organic chemistry tihchian nan a tha hle.
AES leh XPS detector hmang hian lei chung lamah scanner an ti a, boruakah an lo lang tawh 316 stainless steel plate an polishing a ni. Stainless steel pipe-a surface analysis-a total depth tlangpui ber chu 15nm a ni tih thutlukna siam a ni a, a kaihhnawih passivation treatment layer chu a lang bawk. Composition, a thickness leh a anti-corrosion theihna, etc.
A awmzia atanga a lan dan chuan low-alloy steel hian chromium leh nickel sang tak a nei a, thenkhatah chuan molybdenum (316L00CR17NI14MO2 ang chi), titanium, etc. a awm a, a tlangpuiin 10.5% chromium a awm a, chu chuan corrosion resistance tha tak a nei a ni. Corrosion Resistance Chromium-rich passivation layer-a maintenance characteristics avang hian passivation layer hi a tlangpuiin 3-5nm a thuk a ni a, a nih loh leh molecule layer 15 vel a thuk a ni. Passivation layer hi air oxidation-reduction reaction process pumpuiah siam a ni a, chutah chuan chromium leh iron te chu boruak hmangin an oxidized a ni. Passivation layer a chhiat chuan passivation layer thar a lo chhuak nghal vat ang a, a nih loh leh galvanic cell principle siam nghal a ni ang. Stainless steel plate-ah chuan deep crevice corrosion leh stress corrosion a awm ang. Passivation layer-a corrosion resistance hi stainless steel plate-a component awmte tui awm zat nen a inzawm a ni. Entirnan, chromium sang, nickel, leh molybdenum te hian passivation layer binding energy leh passivation layer a corrosion resistance potential difference a tipung thei a ni. Tin, stainless steel pipe-a metal surface enkawlna leh hydrodynamic substance hman dan te nen pawh a inzawm a ni.
2. Stainless steel pipe fittings te chu lei chung lamah a tlak dan tur a awm.
1. CI-containing material-a stainless steel surface-a passivation treatment layer chu tihchhiat a awlsam hle a, hei hi CI-Air-a oxidation potential sang tak a nih vang a ni. Passivation layer-a printed layer chu metal-in a tihchhiat chhunzawm zel chauh a ni. Thil tam takah chuan passivation layer hi ??the stainless steel-a passivation area-ah chauh a chhe vek a ni. Etching-in nghawng a neih dan chu fine holes emaw dents emaw siam danah a innghat a ni. Raw material chunglama pit-like etching te tak te, a darh zel loh chu crevice corrosion an ti a. Crevice corrosion rate hi temperature a san chuan a sang chho zel a, concentration a san chuan a sang chho zel bawk. A solution chu ultra-low carbon emaw low-carbon stainless steel (liter 316 304 liter ang chi) hman a ni.
2. Austenitic stainless steel siam leh welding lai hian stainless steel chunglama blunt warping layer chu awlsam takin a chhe thei a. Thil siam leh welding laiin heating temperature leh heating speed chu stainless steel sensitization temperature range (425-815°C vel)-a a awm chuan, supersaturated carbon chu material-ah crystal grain boundary-ah a precipitate hmasa a, chromium nen a inzawm a, Chromium CRC R2-3C Chutiang a nih chuan austenite-a carbon diffusion rate chu chromium aiin a tam zawk a, chromium chuan chromium hloh chu crystal grain boundary-a chromium carbide a lo awm avangin a khum thei lo. Chumi avang chuan chromium carbide analysis nen crystal grain boundary a chromium awm zat chu a pung a, etch materials te nen a inzawm chuan a tlahniam a, chu chu material ah chuan micro rechargeable battery corrosion a thlen ang. Corrosion chu crystal grains chunglam chauh a ni a, chu chu rang takin a chhungah a lut a, intergranular corrosion a siam a ni. Electric welding-ah hian stainless steel pipe lian tak tak a langsar zawk.
3. Stress Corrosion Cracks: Static data ground stress leh erosion-in a nghawng kimchang tak chu a crack leh metal material blooming a thlen thin. Stress corrosion cracking leh tihchhiatna thlentu natural environment hi a buaithlak hle tlangpui. Tensile ground stress chauh ni lovin, thil siamchhuah, electric welding emaw quenching leh metal materials-a tempering avanga ground stress leh internal stress te pawh a ni.
3. Stainless steel pipe fittings te chhungril leh pawn lam metal surface treatment leh corrosion resistance inzawmna inzawmna .
Stainless steel pipe fittings (chemical polishing, grinding leh polishing ang deuh deuh) inner leh outer surface layer te hian passivation treatment layer tha tak tak an nei a, chu chuan corrosion resistance a nei tha hle. Inner leh outer surface layer te hian smoothness sang tak an nei a, material adhesion a tlem hle a, hei hi corrosion resistance atan a tha hle. Tube-ah hian liquid medium sang tak nei chu a surface roughness sang tak a awm loh chuan tihfai nan a tha zawk a, a bik takin damdawi lam industry-ah chuan a tha zawk.
1. Tube chhung lam atanga electrolytic grinding (electrochemical grinding): electrolytic grinding fluid chu phosphoric acid, sulphuric acid, anhydrous chromic acid, gelatin, potassium dichromate, etc. Stainless steel pipe chhung lam chu a solve a, chu chu a chhuak a, chu chu polishing liquid a ni a, chu chu a solve a, a low pressure chu a kal tlang a, chu chu a low pressure leh a lian ber a ni. Hetih lai hian tube pawn lam chuan divergent whole process pahnih a kalpui a, chu chu stainless steel passivation passivation layer (mucosa thick tak pawh tel) conversion leh melting a ni. Hei hi a chhan chu surface layer pawn lama economical protrusions leh recesses te demulsification leh passivation atana standard chu a danglam a, anodic oxidation a melt a ni. Surface microscopic convex leh concave parts te film siam leh passivation atana condition hrang hrang avang leh anode a dissolution avang hian anode area-a metal salt concentration chu a sang zel a, a chung lamah chuan high-resistance viscosa a siam a ni. Convex leh concave part-a film thickness danglamna chuan anodized surface layer current intensity sang tak a thlen a, electrostatic induction melting chak zawk a thlen a, hun rei lote chhungin pawn lam economy-a thil langsar tak flattening tumna a phak lo va, smoothness sang tak a pel thei bawk Ra≤0.2-0.4μm. Tin, hetiang effect hnuaiah hian pipe chunglama chromium tui awm zat a sang a, stainless steel passivation treatment layer-a anti-corrosion theihna pawh a tha zawk bawk.
How to grasp quality of polishing hi lithium battery electrolyte, concentration value, temperature, plug-in time, current intensity, electrical level, leh tube metal surface treatment level te nen a inzawm tur a ni. He technology hi ka thiam loh chuan pipe chunglam smoothness a tichhia tak zet ang. Electrolysis method chu a level lutuk a nih chuan convex leh concave surface tam tak a awm ang a, tube tin pawh hian fee tam tak an chawi a ngai dawn a ni. Quality tak tak chu technical a ni tur a ni a, a man pawh a sang hle.
2. Tube pawn lam a grinding leh polishing: Rotation leh parallel line hmanga grinding leh polishing. Hetah hian rotary mechanical grinding hi entirnan kan hmang a, mechanical grinding hmanrua hi a awlsam hle a, power leh grinding disc leh advanced grinding equipment te hi a awlsam hle a, power leh grinding disc te a ni a, advanced grinding wax a ni bawk. Graded fine sand particle atanga siam puan disc leh puan disc chu pipe chhung leh pawn lamah vawi tam tak a hma leh hnung lamah polishing a ni a, a tawp thlengin RA ≤ 0.2-0.4μ m a thleng thei a ni.
Electrolytic grinding nena khaikhin chuan mechanical grinding hi a hmanraw awlsam tak, technical content hniam, grasp awlsam, consumption cost hniam, leh tube tihchhiat loh vangin hman a ni nasa hle. Mahse, electropolishing aiin surface printing layer-a corrosion resistance hi a tha zawk hle.
Cold-rolled tube-a defect lian zawk chu hard state a ni a, chu chu yield index a lian hle a, flaring leh bending atan pawh a tha lo. Strict takin sawi ila, national industry standard a tlin loh avangin thermosolidification (quenching) neih a ngai a ni.
3. Gas-a venhim bright annealing furnace: A hmun hnih a awm: bright annealing furnace body leh ammonia decomposition equipment full set a awm.
Bright Annealing Furnace: Key structure chu ring ang maia cross-section muffle tank a ni a, a sir leh a hnuai lam a temperature sang tak heating wire dah a ni bawk. Ammonia dissolved gas hi maintenance steam leh circulating system water cooling gas atan hman a ni. He heat treatment method hnuaia pipe awmte hi pickled leh passivate a ngai lo a, hei hian a chhung leh pawn lam layer te a ti awlsam a, pipe chunglam a pickling avanga a inthlau deuh loh nan a veng bawk. A chhan chu heng thil dik lo tlemte hian pipe chu environment sanitation pipe-a surface smoothness specification-ah a tla thla dawn a ni. Chuvangin, annealing furnace eng tak, venhimna boruak thlang rawh. hangao tech a ni a. A rilru a buai em em a, a rilru a hah em em bawk a. I mamawh a phuhruk kim vek a, airtight performance sang zawk a nei mai bakah efficiency sang tak leh energy saving a nei bawk. Thil hmanrua chi khat nen khaikhin chuan energy hman zat 20%-30% vel a humhim thei a ni.
