E le ho thibela li-castings ho tloha deformation, mapetsong le liphoso tse ling ka lebaka la ho pholile ka potlako ka mor'a ho tšela, le ho etsa bonnete ba hore li-castings li na le matla a lekaneng le ho tiea nakong ea ho hloekisa lehlabathe, li-castings li lokela ho ba le nako e lekaneng ea ho pholile ka hlobo. Li-casting tse tsoelang pele tse hlahisoang li lokela ho raloa ka bolelele bo lekaneng ba karolo ea ho pholile ho netefatsa nako ea ho pholisa ea li-castings.
Nako ea ho pholile ka har'a hlobo ea li-castings e amana le lintlha tse ngata tse kang boima, botenya ba lebota, ho rarahana, mofuta oa alloy, thepa ea hlobo, maemo a tlhahiso le lintlha tse ling tsa li-castings.
一、 Nako ea ho pholisa ea likarolo tsa tšepe tse entsoeng ka hlobo ea lehlabathe
Nako ea ho pholisa ea likarolo tsa tšepe tse entsoeng ka har'a hlobo ea lehlabathe e khethoa ho ipapisitsoe le mocheso ha ho buloa. U ka bua ka lintlha tse latelang: 300-500 ° C bakeng sa li-castings tse akaretsang; 200-300 ° C bakeng sa li-castings tse atisang ho ba le serame le ho senyeha; 200-300 ° C bakeng sa li-castings tse tloaetseng ho phatloha ho chesang Mocheso oa ho lahla ke 800-900 ℃. Hang ka mor'a ho phutholla, tlosa riser e tšollang 'me u hloekise mokokotlo oa lehlabathe, ebe u o beha ka mokoting oa lehlabathe le chesang kapa u kene ka sebōping ho pholile butle.
1, Nako ea ho pholisa ea likarolo tse entsoeng ka tšepe ka har'a hlobo ea lehlabathe hangata e ka khethoa ka ho bua ka Lethathamo la 11-2-1 le Lethathamo la 11-2-3.
Letlapa la 11-2-1 Nako ea ho pholisa ea li-castings tse mahareng le tse nyane ka har'a hlobo ea lehlabathe
| Boima ba ho lahlela/kg | <5 | 5~10 | 10-30 | 30 ~ 50 | 50 ~ 100 | 100 ~ 250 | 250-500 | 500 ~ 1000 |
| Botenya ba lebota la ho lahlela/mm | <8 | <12 | <18 | <25 | <30 | <40 | <50 | <60 |
| Nako ea ho pholisa/metsotso | 20-30 | 25-40 | 30-60 | 50 ~ 100 | 80-160 | 120-300 | 240-600 | 480~720 |
Tlhokomeliso: Bakeng sa li-castings tse nang le marako a tšesaane, boima bo bobebe le mohaho o bonolo, nako ea ho pholile e lokela ho nkoa e le bohlokoa bo fokolang, ho seng joalo, nako ea ho pholile e lokela ho nkoa e le bohlokoa bo boholo.
Letlapa la 11-2-2 Nako ea ho pholisa ea li-castings tse kholo ka hlobo ea lehlabathe
| Boima ba ho lahla/t | 1 ~ 5 | 5~10 | 10-15 | 15-20 | 20-30 | 30 ~ 50 | 50-70 | 70-100 |
| Nako ea ho pholisa/h | 10-36 | 36-54 | 54-72 | 72-90 | 90-126 | 126-198 | 198-270 | 270~378 |
Tlhokomeliso: Ha ho etsoa mohlala oa sekoti, nako ea ho pholisa ea ho lahlela e hloka ho eketseha ka hoo e ka bang 30%.
Letlapa la 11-2-3 Nako ea ho pholisa ka har'a hlobo ea lehlabathe bakeng sa li-castings tse mahareng le tse nyane nakong ea ho tšela tlhahiso
| boima/kg | <5 | 5~10 | 10-30 | 30 ~ 50 | 50 ~ 100 | 100 ~ 250 | 250-500 |
| Nako ea ho pholisa/metsotso | 8-12 | 10-15 | 12-30 | 20-50 | 30-70 | 40-90 | 50 ~ 120 |
Tlhokomeliso: 1. Boima ba ho lahla bo bolela boima ba kakaretso ka lebokoseng ka leng
2, Li-castings li qobelloa ho pholile ka moea oa moea moleng oa tlhahiso, 'me nako ea ho phomola e khutšoanyane.
Nako ea ho pholisa ka har'a hlobo ea litšepe tse kholo tsa tšepe e ka baloa ho latela foromo e latelang ea liteko.
t=vG (2-1)
ka mokhoa oa t——Nako ea ho pholisa (h)
v——Sekhahla sa ho pholisa, nka 4~8h/t
g—— Boima ba ho laola (t)
k ke karo-karolelano ea boima ba ho lahla ho bophahamo ba molumo oa eona. Ha boleng ba k bo le boholo, botenya ba lebota la ho lahla le ho feta nako ea ho pholisa. Mokhoa oa ho bala oa k ke
k=G/V (2-2)
foromong ea k——Boima ba ho lahla le karo-karolelano ea bophahamo ba eona (t/m³);
G—— Boima ba ho lahla (t)
V—— Butle-butle molumo oa molumo oa ka ntle oa contour (m³)
二、 Nako ea ho pholisa ea li-castings tsa tšepe ka hlobo ea lehlabathe
Lisebelisoa tsa tšepe bakeng sa ho hloekisa lehlabathe ka hydraulic, ho thunngoa ha lehlabathe le thunngoeng le ho hloekisa lehlabathe la pneumatic li lokela ho pholile ho 250-450 ° C ka har'a hlobo ea lehlabathe ho sisinyeha. Lehlabathe le oelang ka holimo ho 450°C le ka baka deformation le mapetsong a li-castings. Nako ea ho pholisa ka har'a hlobo ea lehlabathe e ka bonoa ho Setšoantšo sa 11-2-1 le Setšoantšo sa 11-2-3.
Ha u sebelisa litšoantšo tse tharo tse ka holimo, u lokela ho ela hloko lintlha tse latelang:
(1) Ha boima ba carbon steel casting bo feta 110t, motheong oa ho fumana boleng ba nako ea pholileng bo lumellanang le 110t ho ea ka Figure 11-2-2, bakeng sa 1t e 'ngoe le e' ngoe ea boima ba 'mele, eketsa nako ea ho pholisa ka 1-3h.
(2) Ha boima ba ZG310-570 le lisebelisoa tsa tšepe tsa alloy li feta 8.5t, nako ea ho pholile e ka imena habeli ha e bapisoa le boleng ba nako ea pholileng ea carbon steel castings e fumanoang ho ea ka Setšoantšo sa 11-2-1 le Setšoantšo sa 11-2-2 .
(3) Li-castings tse nang le marako a teteaneng (joalo ka li-anvils, joalo-joalo) tse nang le libopeho tse bonolo le botenya ba lerako bo lekanang li ka lokolloa (kapa li qhekelloa ka bolokolohi) 20-30% pele ho nako ea pholileng e boletsoeng setšoantšong. Li-castings tse joalo li ka boela tsa pholile ka tlhaho ka sekoting sa ho tšela ntle le phekolo ea mocheso ka sebōping, 'me nako ea ho boloka mocheso e baloa e le 1.5-2t lihora tse ling le tse ling tse 24.
(4) Bakeng sa li-castings tse nang le meaho e rarahaneng, liphapang tse kholo tsa botenya ba marako, le tse atisang ho phunyeha, nako ea ho pholisa e lokela ho ba bolelele ba 30% ho feta boleng bo boletsoeng setšoantšong.
5 Sena se tla eketsa sekhahla sa ho pholisa, kahoo nako ea ho pholisa e ka khutsufatsoa ka 10%.
三、Mould mocheso oa li-castings tse se nang ferrous alloy
Mocheso oa mocheso oa li-alloy castings tse se nang ferrous li ka fumanoa ho ea ka Lethathamo la 11-2-4.
Letlapa la 11-2-4 Mocheso oa Extrusion oa li-castings tse se nang ferrous alloy
| Ho lahla likarolo tsa sebopeho | Thepa ea ho lahla | Alloy casting boiketlo ba sechaba | Tikoloho ea sebaka sa ho lahla | Thempereichara ea ho tsoa/℃ | |
| Lintho tse nyane le tse mahareng | Lintho tse kholo | ||||
| Sebopeho se bonolo le botenya ba lebota bo lekanang | Coreless, metsi a mantlha, mofuta o metsi | Tloaelo ea ho phatloha ho chesang e nyane, joalo ka AI-Si alloy | Mocheso o phahame haholo 'me ha ho na moralo | 300 ~ 500 | 250-300 |
| Mofuta o omileng, o omileng | 250-300 | 200 ~ 250 | |||
| Sebopeho se bonolo le botenya ba lebota bo lekanang | Coreless, metsi a mantlha, mofuta o metsi | Tloaelo ea ho phatloha ho chesang e phahame, joalo ka li-alloys tsa AI-Cu series | Thempereichara e tlase 'me ho na le moralo | 250-300 | 200 ~ 250 |
| Mofuta o omileng, o omileng | 200 ~ 250 | 150-200 | |||
| Sebopeho se rarahaneng le botenya bo sa lekaneng ba lebota | Coreless, metsi a mantlha, mofuta o metsi | Tloaelo ea ho phatloha ho chesang e nyane, joalo ka AI-Si alloy | Mocheso o phahame haholo 'me ha ho na moralo | 200 ~ 250 | 150-250 |
| Mofuta o omileng, o omileng | 150-250 | 100 ~ 200 | |||
| Coreless, metsi a mantlha, mofuta o metsi | Tloaelo ea ho phatloha ho chesang e phahame, joalo ka li-alloys tsa AI-Cu series | Thempereichara e tlase 'me ho na le moralo | 150-200 | 100 ~ 200 | |
| Mofuta o omileng, o omileng | 100 ~ 150 | <100 | |||
Nako ea poso: May-26-2024
