Engtin Nge Stamping Die hian Qualified Products a siam theih ang?
Mi tam tak chu die lem (drawing dies) hian an ti hlauhawm hle. Hei hi a chhan chu design neih chhung hian thil tam tak ngaihtuah a ngai mai ni lovin, a pawimawh zawk chu die trial neih laiin duhthusam result an hmu thei lo fo a, vawi tam tak siamthat a ngai thin. Chuvangin, practice hmanga experience khawlkhawm hi die design drawing atan a hlawkpui hle.
A hnuaia point paruk te hi kan engineer-te’n an sawifiah a ni:
1. Thil hman tur
Material tha tak tak chu indona chanve a ni. Drawing chungchang sawi dawn chuan material pawimawhzia hi ngaihthah theih a ni lo.
Drawing atana hman ber cold-rolled thin steel sheet zingah hian 08Al, 08, 08F, 10, 15, leh 20 steel. 08 steel hi hman tam ber a ni a, rimmed steel leh killed steel-ah then a ni. Rimmed steel hian man tlawm tak leh surface quality tha tak a pe a, mahse segregation nasa tak leh tar chakna tikhawtlai duhna a lantir bawk a, hei vang hian stamping performance sang tak leh a lan dan tur khauh tak mamawh parts tan pawh a tha lo hle. Killed steel hian performance tha zawk a pe a, uniform property a nei a, mahse a man a to zawk. A aiawhtu grade chu aluminium-killed steel 08Al a ni. Ramdang steel te chuan SPCC-SD deep-drawing steel an hmang a, hei hian 08Al. 1. aiin tensile property tha zawk a nei a, Customer-in material a mamawh chu a khauh vak lo a, repeated mold trial-in a mamawh a tlin loh chuan material dang enchhin rawh.
2. Blank Dimensions tihfel
Simple rotating parts tan chuan non-thinning process laiin blank diameter a inthlak a, mahse material thickness chu original thickness nen a inhnaih hle thung. Hei hi blank area chu drawn part area nen a inang tih principle hmanga chhut theih a ni (trimming a ngai a nih chuan trimming allowance dah belh a ni). Mahse, drawn parts te hian shape leh process complex tak tak an nei fo va, a chang chuan thinning a ngai thin. 3D software program tam tak chu unfolding calculation atan a awm laiin, an dikna chuan dikna mamawh chu a tlin thei lo.
Engtin nge product failure buaina hi chinfel theih ang? A chinfel dan: Test material.
A. Product pakhat hian step tam tak a paltlang a, a hmasa ber chu a tlangpuiin blanking a ni. A hmasa berin, blank pianzia leh a lian zawng hriatthiamna rough tak neih theih nan unfolding calculation ti la, chu chuan blanking die dimension zawng zawng hriat theih nan a pui ang. Mould design zawh hnuah blanking die-a mipa leh hmeichhia die chu siam danglam suh. A hmasa berin wire EDM hmangin blank chu machine hmangin siam la (blank lian zawk chu mill theih a ni a, chutah chuan clamp hmangin trim theih a ni). A hnua drawing process hmanga experiment nawn leh a nih hnuah a tawpah chuan blank dimension chu an chhut chhuak a, chutah chuan blanking process atana mipa leh hmeichhia dies chu machine hmangin an siam a ni.
B. Inversely arrange the process: drawing die chu test hmasa la, chutah chuan blank-a blanking edge dimensions chu machine-in, thawhrimna chanve hmangin result chu a let hnih zetin i hmu ang.
3: Stretch Factor(m) a ni ang.
Stretch factor m hi process calculation drawing-a process parameter pawimawh ber pakhat a ni. A tlangpuiin stretch order leh number hriat nan hman a ni. Thil tam takin stretch factor m hi a nghawng a, chung zingah chuan material property, relative material thickness, stretching method (chu chu blank holder awm leh awm loh), stretch zat, stretching speed, mipa leh hmeichhia die corner radius, leh lubrication te pawh a tel.
Stretch factor m atana calculation leh selection principle te hi stamping manual hrang hranga thupui pawimawh tak tak tarlan a ni a, method hrang hrang a awm a, deduction, table lookup, leh calculation te pawh a awm bawk.
A. Die siamthat lai hian relative material thickness, stretching method (chu chu blank holder awm leh awm loh), leh stretch zat te hi siamrem a harsa a fimkhur takin kalpui rawh!
B. Die-ah lubricant hnawih la, a nih loh leh film bag hmangin sheet-ah khuh rawh.
C. Tensile cracking a awm chuan die-ah (punch ni lovin) lubricant hnawih tur a ni. Workpiece chu die side-ah 0.013-0.018mm thick plastic film hmangin khuh rawh.
4. Hnathawhna hmuna Heat Treatment
Stretching process chhung hian workpiece chu cold plastic deformation a tawk a, chu chuan cold work hardening a thlen thin. Hei hian a plasticity a ti tlem a, a deformation resistance a ti sang a, a hardness a ti sang bawk. Chu bâkah, mould design chu a dik lo a nih chuan, metal chu a nêm theih nân leh a plasticity a siam ṭhat theih nân intermediate annealing a ngai thei bawk.
Note: A tlangpuiin intermediate annealing hi a ngai lo, a chhan chu senso a tisang a ni. Step dang dah belh leh annealing te chu thlang rawh. Fimkhur takin hmang rawh!
Annealing hi a tlangpuiin temperature hniam takah an ti thin a, recrystallization annealing tia hriat bawk.
Annealing neih chhung hian ngaihtuah tur pawimawh pahnih a awm a, chungte chu decarburization leh oxidation te an ni. Hetah hian oxidation lam kan ngaihtuah dawn a ni. Oxidation hian workpiece-ah scale a siam a, chu chuan chhiatna pahnih a nei a, chungte chu workpiece effective thickness a tihtlem bakah mold wear a tipung bawk.
Company dinhmun a tlem chuan conventional annealing hi hman a ni tlangpui. Scale formation tihtlem nan annealing laiin furnace chu a theih ang anga khat tur a ni. Thil tih dan pangngai lo tlemte pawh ka hmang tawh bawk:
A. Workpiece tlem zawk a awm chuan workpiece dang nen an inhmeh thei bawk (annealing process parameters chu a bul berah chuan a inang vek nia ngaih).
B. Hnathawh turte chu thir bawm chhungah dah la, weld hmangin seal la, chutah chuan furnace-ah dah rawh. Scale paih tur chuan annealing hnuah pickling tih tur a ni a, a remchan dan angin.
Company dinhmun a tlin chuan nitrogen furnace annealing, bright annealing tia hriat bawk chu hman theih a ni. Uluk taka enfiah loh chuan a rawng chu annealing hmaa a rawng ang chiah kha a ni tawh ang.
5. Metals cold work hardening chak tak nei emaw, test mold neih laiin cracking a awm a, solution dang a awm loh chuan intermediate annealing step dah theih a ni.
6. A tawp berah chuan thu belhchian dawl tlemte:
A. Product drawing-a dimension-te chu a theih phawt chuan a sir khatah chhinchhiah tur a ni a, chu chuan pawn lam emaw chhung lam emaw a sawina chiang takin a tarlang tur a ni. Internal leh external dimension pahnih hi mark suh. Midangte pek lemziak chungchangah harsatna a awm chuan anmahni nen inbiak pawh theih a ni. Consistency a awm theih chuan a thleng tur a ni. Chutiang a nih loh chuan workpiece leh component dangte assembly relationship chu hriatthiam a ngai a ni.
B. Final process atan chuan workpiece dimensions chu pawn lam a nih chuan die chu primary factor a ni a, clearance chu punch dimensions tihtlem a ni. Workpiece dimensions chu internal a nih chuan die hi a primary factor a ni a, clearance chu die dimensions tihpun a ni.
C. Punch leh die corner radii design dawnin, a hnua die siamthatna tur awlsam zawk nan allowable value tenau ber hmang ang che.
D. Workpiece cracking chhan i hriat hian a hnuaia mi hi ngaihtuah la:
Material quality tha lo avanga crack lo awm chu jagged emaw irregular emaw a ni fo a, process emaw mold avanga crack lo awm erawh chu a tlangpuiin uniform zawk a ni thung.
E. "A tam chuan wrinkles a thlen a, tlem zawk chuan crack a thlen bawk." He principle ang hian material flow conditions chu blank holder pressure siamrem te, draw ribs tihpun te, punch leh die corner radii siamthat te, workpiece-a process notches te cut te hmangin siamrem theih a ni.
F. Wear resistance a awm theih nan leh stretch mark a awm loh nan punch leh die bakah blank holder te chu quenched tur a ni a, a tul chuan hard chrome plated a ni tur a ni.
Mould i duh chuan min rawn biak theih reng e!
Foshan Davinci Technology Co., Ltd. chuan a rawn ti a
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