SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Silver Solder from Fine Silver, Copper and Spelter: Gee, 1877
Silver solder joins silver, copper and brass with a strong, hard seam. The silversmith George Gee preferred one made of fine silver, shot copper and a little spelter (zinc), melted only once: his best hard solder is 16 dwt of fine silver, 3 dwt 12 gr of shot copper and 12 gr of spelter to the ounce, about 80, 17.5 and 2.5 per cent. More copper and zinc make it flow sooner (his medium, easy and common solders). Silver and copper alone give the hardest, least fusible solder; too much zinc makes it eat away during soldering.
Kati
Two hours
Maagizo
1
1
Weigh the metals
Weigh the metals
Inapakia daftari la Jupyter…
Vifaa kwa hatua hii:
Fedha Safi80 g
Mche wa Shaba17.5 g
Mche wa Zinki2.5 gZana zinazohitajika:
Mizani ya kupimia uzito
Patasi ya chuma baridi2
2
Anneal and test the crucible
Anneal and test the crucible
Before a new plumbago (graphite) crucible is charged, heat it slowly to redness on a fire that is dying down and has no blaze, so it does not crack. Touch it with a cold iron bar: if cracks show, reject it.
Zana zinazohitajika:
Kalibu ya grafiti na udongo
Tanuru la mkaa
Koleo la kaure ya kuyeyushia3
3
Melt silver and copper
Melt silver and copper
Put the copper at the bottom of the crucible, the silver on top, and melt them in the furnace. Stir them well together with an iron stirrer, tapered at the point and first heated to redness. When the metals are just beginning to fuse, cover the melt with finely divided, pure charcoal to keep the air off it.
Vifaa kwa hatua hii:
Mkaa - uliosagwa laini1 as requiredZana zinazohitajika:
Tanuru la mkaa
Kikorogeo cha chuma
Glavu Zinazostahimili Joto4
4
Add the spelter
Add the spelter
Hold the spelter in a long pair of tongs over the mouth of the crucible, inside the furnace, until it has almost reached its melting point, then drop it into the molten metal and stir quickly so it mixes in. Zinc burns away quickly in the air, so it goes in last.
Zana zinazohitajika:
KoleoKikorogeo cha chumaGlavu Zinazostahimili Joto5
5
Pour the ingot
Pour the ingot
Withdraw the crucible from the furnace at once and pour into an ingot mould that is clean, smooth, lightly greased, dusted with fine charcoal and warmed: a cold mould makes the metal spout, but do not overheat it either. Melt solder only once; Gee found that solders containing volatile metals grow hard, brittle and drossy with repeated melting.
Vifaa kwa hatua hii:
Mkaa - uliosagwa laini1 as requiredZana zinazohitajika:
Koleo la kaure ya kuyeyushia
Kalibu ya kutupa madiniGlavu Zinazostahimili Joto6
6
Roll into pallions or file to dust
Roll into pallions or file to dust
Roll the solder out thin between flattening rollers and cut it lengthways and then crossways with hand shears into little bits (pallions), or file it into fine dust, according to the work in hand. The work is then bound together, wetted with a paste of borax and water, and the pallions laid on the joints and melted with a blowpipe flame.
Zana zinazohitajika:
Kinu cha kuviringisha metali
Makasi ya chuma
Tupa (Tupa ya Mkono)Vifaa
4- 80 gKishikilia Nafasi
- 17.5 gKishikilia Nafasi
- 2.5 gKishikilia Nafasi
- 1 as requiredKishikilia Nafasi
Zana Zinazohitajika
12- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
Hatari
Extracting Silver by Cupellation — Separating Noble Metal from Lead Ore
na Peter
Uchimbaji chuma
71
0
0
0
2
0
Smelting Copper from Malachite — From Green Ore to Red Metal
na Peter
Uchimbaji chuma
108
0
0
0
10
0
Extracting Zinc from Sphalerite — Roasting and Reduction of the Invisible Metal
na Peter
Uchimbaji chuma
81
0
0
0
8
0
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.