Ocena wątku:
  • 0 głosów - średnia: 0
  • 1
  • 2
  • 3
  • 4
  • 5
Lut palladowy
#1
Witam Jestem tu ponieważ przyslo mi zrobić obrączki z bialego zlota palladowego 14k Używam gotowej ligury NF508 I tu pytanie Potrzebuje zrobić lut ale ciężko znaleźć informacje na ten temat Widziałem ze forumowicze juz trochę o tym dyskutowali ale bez konkretów Czy na dzień dzisiejszy ktoś dysponuje formułą na taki lut Z gory dziekuje
Odpowiedz
#2
https://patents.google.com/patent/US20040086416A1/en

EXAMPLE 8
[0066]
A “14KWE (14 Karat White Easy) Extreme” plumb white gold solder comprises a solder composition consisting of about 58.33% by weight 24 karat gold (karating melting temperature of approximately 1615° F.), and about 2% to about 14% by weight gallium, indium, and copper in a 6:3:1 ratio, respectively. The solder composition is allowed to cool to 1600° F. before being cast with hydrogen and oxygen in a steel upright ingot mold for forming a bar. The solder bar is then allowed to cool to about room temperature (approximately 78° F.-80° F.). The solder bar is then cleaned by grinding the edges and rolled to a desired thickness. An additional step of annealing is optional depending on desired softness. This rolling, annealing and quenching cycle of steps is repeated numerous times to incrementally reduce the solder bar to a desired thickness. Subsequent to each successive cycle the annealing temperature is reduced appropriately as shown in previous examples using platinum. The solder is then finished in a conventional manner and individually hand-stamped for identification.
[0067]
This plumb solder is then used to assemble and/or repair jewelry containing about 58.33% by weight 24-karat gold. The melting temperature of the solder (approximately 1175° F.) makes it easy to work with. The color of the solder matches well with the jewelry and does not require any further processing. Additionally, there is no pitting observed on the spot where the solder is used.
[0068]
Although this example is directed to 14-karat white gold, other colors of gold including yellow, pink, red, or green are within the scope of the present invention.


https://www.ganoksin.com/article/carat-g...ry-making/

White Gold Solders, Cadmium-free
Grade

Gold
%

Silver
%

Copper
%

Nickel
%

Zinc
%

Melting Range,
°C

10 ct Easy

41.67

28.1

14.1

10.0

6.13

763-784

10 ct Hard

41.67

30.13

15.1

12.0

1.1

800-832

14 ct Easy

58.33

15.75

5.0

5.0

15.9

707-729

14 ct Hard

58.33

15.75

11.0

5.0

9.92

800-833

18 ct Easy

75.0


6.5

12.0

6.5

803-834

18 ct Hard

75.0


1.0

16.5

7.5

888-902

Melting ranges of typical nickel white gold: 10 ct casting alloy: 970 -1017°C; 14ct casting alloy: 940 – 977°C; 18 ct casting alloy: 915-948°C.
Odpowiedz


Skocz do:


Użytkownicy przeglądający ten wątek: 3 gości