Opening a plate is the first process of making jewelry, that is, making a template by hand with silver according to the drawings designed by the designer.
Because of its high technical content, it is one of the most difficult jewelry processing technologies to master.
Any design, with the original version, can realize batch casting, and the quality of casting jewelry is determined by the quality of the version (beautiful and accurate).
The master needs to make a prototype of this jewelry according to the design drawings. Moreover, all the gems embedded in this jewelry need to be handed over to the master, so that the master can constantly compare them when making them to ensure a close fit.
Every master will have a filing board in front of his desk, which may follow him for more than ten years.
Opening the board is the core key in the whole jewelry making process, so the income of the master in this process is one of the highest in the whole work. Its function is equivalent to the original painting in the process of animation production. It determines the overall shape, style and taste of this jewelry.
A good printmaker should have more than ten years' working experience.
The raw materials used for plate lifting are basically white copper, which is highly malleable and easy to weld, so it is widely used by plate lifting masters.
From the United States to China, master plate makers basically use white copper, but there are also models made by hand with silver, as well as carving wax and computer plate making.
Basic skills of plate lifting technology: pliers, saw, file and welding.
Plate lifting tools: welding torch, balloon, crane, hammer, triangular file, semi-circular file, welding plate, saw bow, saw blade, needle-nosed pliers.
Saw, about a week.
Filing work: filing 10X 10mm thick copper sheet and 1mm diameter round copper sheet.
age
Make a stone gesture
Extended data:
Jewelry processing technology refers to the whole process of processing all kinds of jewelry raw materials in various forms to form finished products. Specifically, it includes manual processing technology, machine processing technology and surface treatment technology of precious metal jewelry.
Process classification
1. Jewelry processing technology can be divided into two categories: precious metal jewelry processing technology and gem inlay technology.
Two, precious metal processing technology can be divided into traditional manual processing technology, machine processing technology and surface treatment technology.
Three, the traditional manual processing technology mainly includes filament technology, machine processing technology including lost wax casting technology, stamping technology, machine chain technology, etc. Surface treatment technology includes electroplating technology and embossing technology.
Process subdivision
1. Manual processing technology
Filament technology
Fine wire technology refers to the fine gold technology in which metal wires are made into shapes by winding, kneading, shredding and stacking. When making, the metal such as gold or silver is first drawn into a wire with the required thickness, and then the drawn wires are twisted together (known as stranded wires in the industry). According to the pattern of the drawing, the producer clamps the wire into various patterns with tweezers, and the parts of various shapes are gathered together, sprinkled with welding powder and overheated, that is, welded and connected into a certain overall shape.
This whole shape is called "black tire". The black tire is washed with dilute acid, and then plated with silver, burnt blue, gold or silver, and finally it becomes a finished product. Filament jewelry is slender, exquisite and rich in connotation, and has excellent myopia effect.
2. Processing process
(1) lost wax casting process
Lost wax casting is the most important production process in jewelry industry today, and lost wax casting jewelry has also become the mainstream product of jewelry today.
The casting process is suitable for jewelry with obvious concave-convex shape and can be produced in large quantities.
The technological process of lost wax casting is: making metal model-pressing rubber model-injecting wax model-planting wax tree-pouring gypsum model-casting.
(2) Stamping process
Stamping process, also known as die stamping and embossing, is a kind of embossing pattern manufacturing process. The steps are as follows: first, make a mold according to the master mold, and then make a relief pattern on the metal through pressure.
Stamping process: stamping patterns, forming (bending), and bonding (usually with solder).
The stamping process is suitable for ornaments with uneven bottom, such as small lock pieces or articles with inconspicuous undulations, and it is easy to punch or combine in two or more steps. In addition, extremely thin parts and jewelry with exquisite detail patterns also need stamping process.
(3) Machine chain processing technology
Machine chain processing technology refers to the method of machining chain ornaments by machinery. Common necklaces such as Venice chain, bead chain and palindrome chain are all machined.
The main technological process of machine chain processing is: wire drawing-chain making-welding-surface treatment-assembly-cleaning.
Machine chain technology is characterized by large processing batch, high efficiency, many styles and good quality. Necklace ornaments on the market today have almost been occupied by mechanism necklaces.
3. Surface treatment process of precious metal jewelry
Precious metal jewelry should be surface treated in the final stage of its production to achieve ideal artistic effect. There are many methods of surface treatment, mainly engraving, gold plating, electroplating, engraving (milling), sand blasting and so on.
(1) electroplating process
Electroplating process is a kind of processing method to electroplate the surface of precious metal jewelry, such as gold plating on silver jewelry and rhodium plating on platinum jewelry.
The main process of jewelry electroplating is: acid and alkali washing-degreasing and polishing-electroplating. Electroplating process can protect the surface color and brightness of precious metal jewelry and make the jewelry look more beautiful.
(2) Gold plating process
The process of wrapping gold is to wrap extremely thin gold foil on non-gold ornaments layer by layer, then heat it, and use tools to press the gold foil firmly on the surface of the ornaments without leaving seams.
The gold-plated ornaments look like gold ornaments. Gold plating technology is also a common means of jewelry surface treatment.
(3) Carving technology
Chiseling technology is a process of carving patterns on the surface of precious metals by hand with a chisel. Patterns can be deep or shallow, uneven.
(4) car flower (milling flower)
The process of carving shiny horizontal stripes and vertical stripes on the surface of jewelry with a high-speed rotating diamond milling cutter and arranging them in a pattern is called turning or milling.
Because the diamond milling cutter is very hard, the milled stripes are bright and shiny. The so-called flash ring or flash pendant is made by car-flower technology and is very popular with people.
(5) sandblasting
Fine quartz sand is sprayed on the bare polished metal surface with high pressure, resulting in a hazy and soft surface technology.
reference data
Baidu encyclopedia-jewelry processing technology