Drawing hi thil siamchhuahna industry-a siam dan pawimawh tak pakhat a ni. Mechanical force tension leh shear force ang chi hmanga metal tih lian leh tihthianghlim nan a hman dan a ni. Metal product siam nan a tha hle a, wire, pipe leh thread te chu chakna sang leh surface quality sang tak mamawh a ni. Mahse, deformation degree engemaw chen, strain concentration leh residual stress te chu drawing process chhung hian a awm ngei ang. Pipe lem siam nan hian annealing treatment a ngai em? Nihtir Hangao hian vawiin hian look nei turin a rawn hruai che a ni.
Annealing heat hmanga enkawlna .
Annealing hi lemziak lama thil pawimawh dang a ni bawk. Metal chhunga stress awm chu a ti bo a, cooling rate tihlum leh tih hniam hmangin grain boundary energy a ti tlem a, chu chuan grains softening leh increasing te effect a ti thei a ni. Annealing hi full annealing, spheroidizing annealing, recrystallization annealing leh hmanraw dangteah then theih a ni. Chumi zingah chuan pipe siamnaah hian spheroidizing annealing hman theih a ni. Forced cooling leh controlling time leh temperature hmangin grains te chu a lian a, spherical a ni a, chu chuan metal ductility leh weldability a ti tha a ni. Recrystallization Annealing hian deformation hardening leh residual stress chu a ti bo thei a, crystal chu a lo thang lian leh thei a, grain boundary thar a siam thei bawk.
A tlangpuiin annealing hi drawing processing-a thil pawimawh tak a ni a, chu chuan metal chu mechanical property leh surface quality tha zawk a hmuh theihna tur a siam thei a, chubakah processability leh usability tha zawk a hmu thei bawk. Mahse, thil chi hrang hrang leh thil siam hrang hrangte chu dinhmun bik a zirin a zir zelin enkawl a ngai a ni. Technical points leh process flow of solution strictly master hmang chauhvin annealing heat treatment annealing heat treatment chu a tawp ber product quality leh performance a awm thei ang.
1. Process danglamna .
1) Cold-drawn steel pipe annealing .
Cold-drawn steel pipe te hi an mechanical property leh processing performance tihchangtlun nan an siam chhuah laiin annealed an ngai tlangpui. A kalphung bik chu: A hmasa berah chuan, cold-drawn steel pipe chu temperature engemaw chen a lum a, chutah chuan hun engemaw chen a lum a, a tawpah chuan zawi zawiin a lum a. Hetiang hian cold-drawn steel pipe grains te chu a tithianghlim thei a, stress a ti bo thei a, steel pipe plasticity leh toughness a ti tha thei bawk.
2) Cold-drawn steel pipe annealing tel lo .
A then phei chuan cold-drawn steel pipe pawh annealing tel lovin annealed theih a ni bawk. Entirnan, cold-drawn steel pipe wall thickness a te a, a diameter a te a nih chuan mechanical property mamawh tak tak tihhlawhtlin nan annealing a ngai lo. Chu bakah, cold-drawn steel pipe chu a hnu lama processing, cold bending, welding leh process dang ang chi te a tawk dawn a nih chuan annealing hi paih theih a ni bawk.
2. Hnathawh dan inang lo .
1) Cold-drawn steel pipe annealing .
Annealing hmang hian cold-drawn steel pipe grain size chu control theih a ni a, chu chuan steel pipe mechanical property a ti tha thei a ni. A bik takin, annealing hian steel pipe-a yield strength leh tensile strength a tihhniam thei a, mahse a plasticity leh toughness a ti tha thei thung. Tin, annealing hian stress a ti bo thei bawk a, steel pipe processing performance pawh a ti tha thei bawk.
2) Cold-drawn steel pipe annealing tel lo .
Annealing tih a nih loh chuan cold-drawn steel pipe-a mechanical property chu a chhe thei a ni. Cold-drawn steel pipe siamna kawngah hian residual stress a awm avangin annealing tih loh chuan heng stress te hian steel pipe mechanical property a nghawng dawn a ni. Chu bakah, annealing nei lo cold-drawn steel pipe grain size pawh a lian zawk thei a, chu chuan a plasticity leh toughness a nghawng thei bawk.
3. Fimkhur tur .
Cold-drawn tube annealing process chhung hian a hnuaia mi te hi hriat a ngai a ni.
1) A lum zawng inang tlang .
Cold-drawn tube annealing hian cold-drawn tube a inthlak loh nan heating temperature uniformity chu vawng reng a ngai a ni. Cooling process chhung hian tube deformation ang chi harsatna awm lo turin cooling uniformity vawng reng a ngai bawk.
2) Annealing hun chhung control .
Annealing hun hi a tlangpuiin a rei a, annealing effect a awm theih nan hmun tin temperature chu a awlsam thei ang bera siam turin control tha a ngai a ni.
3. Cooling method hman dan tur dik taka thlan .
Annealing zawhah chuan cold-drawn tube chu sealed takin dah tur a ni a, a nih loh leh a tul lo taka dah luh a nih loh nan venhimna dang emaw tih tur a ni.
A tawi zawngin, cold-drawn tube annealing process hi cold-drawn tube siamna atana thil pawimawh tak a ni. Annealing process chu a remchan dan anga tihreh a nih chuan, cold-drawn tube physical property leh formability te chu a ti tha thei a, final product quality pawh control theih a ni a, customer mamawh pawh a phuhruk tha zawk thei bawk.
4. Thuhmahruai .
A tawi zawngin, cold-drawn steel tubes annealing leh non-annealing inthlauhna chu process leh performance inang lo takah a awm a ni. A tlangpuiin cold drawn steel tube siamna atan chuan steel tubes mechanical property leh processing performance tihchangtlun nan annealing a ngai a ni. Mahse, a then phei chuan, cold drawn steel tube-a wall thickness a lo te, a diameter a te, a nih loh leh a hnu lama processing a ngai a nih chuan annealing tih a ni lo thei.
