How to cast rings, how to cast copper crafts

Your question is designed to be applied to the foundry industry.

Let me roughly talk about the basic principle, make a mold according to what you want to do, and then use the mold to make a mold (professionally called a mold), melt the metal and pour it into the mold, remove the excess metal after cooling, and then polish and modify it to get what you want.

If you are making something like a silver ring, and it is made in small batches, you can buy a small crucible electric furnace for melting metal, and you can check it on the Internet to find out what an electric furnace is, and I won't explain it specifically. If you plan to invest in a small one, you can burn the crucible yourself with fire, but this is very troublesome because the melting point of silver is 960 degrees, which means that if you want to turn silver metal into liquid, you need to use fire to raise the temperature above 960 degrees, so it is very troublesome.

Then you need to make a mold according to what you want to do, which is very important, if the mold is done problematically, what you come out of will also have a problem. Mold making is a relatively deep subject, you have to make different molds according to your casting methods (there are many kinds of casting methods, sand casting, lost wax casting, die casting, etc.), rings and the like should be used for pressure casting, which involves how to pour molten metal in, according to the different shrinkage ratios of the metal, and how convenient it is to clean up after you cool down have requirements, the general mold is done by a special company or individual, if you plan to do it, you have to contact to do the mold, the other point is the design, Did you design what you want to cast? If you don't have drawings or ideas, no one will make you a mold.

When these are ready, you can do it, in the process of doing it should also be equipped with a pouring spoon (for pouring molten metal), grinding wheel, sandpaper, hand rubbing (for grinding and correction), in fact, a very important one is the problem of polishing, because the things you make are dull and dull, will not shine to your imagination, this polishing problem requires you to buy polishing machines and other equipment, what is a polishing machine you check on the Internet.

Almost, and if you ask how long it will take to learn, I really can't do this, it has something to do with you. Those who have a heart learn quickly, and those who are impetuous will need a little longer.

Your idea is a very small thing in the foundry industry, if you like this business, find a foundry to learn, hehe.

ok good luck

The melted metal liquid is poured into a ready-made plaster mold and no technical skills are required. The style of the ring is determined by the plaster cast, which is bought and comes in many styles. Melting the metal (gold or silver) requires a bit of skill, mastering the heat and adding some white powder (to help melt).

Pentame coins are cast rings and are made from disposable molds.

A ring made of 5 dimes is also worthless, so what is his use?

How are the five dimes minted for rings? Can the machine be bought in **?

Under the condition of silver plate, first, make a plastic mold with silver plate, then use the plastic mold to fill wax to make a wax plate, and then take the wax plate to pour the gypsum mold.

There are several major steps in casting copper crafts.

First, clay sculptures or 3D models.

Second, it is converted into wax film (first make the shell mold, and then pour wax) third, convert it into a copper mold (first make a high-temperature resistant gypsum mold, and then pour copper water) Fourth, polish and polish.

The methods of casting copper process are:

1.Raw material preparation: including Henan Dashan non-ferrous metal raw material visual inspection, chemical composition analysis, batching and weighing of various raw materials according to the calculation results of ingredients. In addition, it also includes the drying and weighing of refining agents and deterioration agents.

2.Smelting: The raw materials are added to the furnace according to a certain feeding order, and the non-ferrous metals of Henan Dashan are melted into alloys with uniform chemical composition.

3.Pre-furnace testing: After the alloy Henan Dashan non-ferrous metals are melted evenly, samples are taken for testing to check whether the various chemical components meet the requirements of technical standards.

4.Adjust the composition: After laboratory testing, if Henan Dashan non-ferrous metals find that one or several chemical compositions in the alloy exceed the provisions of the technical standards, they should be adjusted to make the chemical composition meet the technical standards.

5.Refining: After the chemical composition is compounded, the dissolved gases and entrained solid particles in the alloy are removed with a refining agent.

6.Refinement and deterioration: add an appropriate amount of refiner and metamorphic agent to the aluminum alloy liquid to improve the mechanical properties and mechanical cutting performance of Henan Dashan non-ferrous metal alloy.

First, the mold silicone is used, which is roughly divided into two types: one is 1:1 mixing, easy to form, no adhesion, but afraid of several types of metals such as copper and aluminum; The other is to add coagulant in a proportion of a few tenths, and the disadvantage is that the stirring is uneven and easy to stick.

Then use the mold cement to pinch one side of the horse from the middle line. Brush the silicone, while resistant, at least five times, and then brush the gypsum shell that plays a fixed role on the silica gel, which can be mixed with hemp silk to increase the strength. Once fully set, peel off the cement, apply petroleum jelly release agent or dish soap to the edges of the silicone, and then follow the same procedure to brush the silicone and plaster shells.

Finally, carefully separate the molds and remove the prototype. Use a silicone mold to pour wax into it to get a wax horse, and repair and modify it to perfection.

The wax horse is stained with the glue mouth made of welding wax, and the shape of the horse is also left with a breath opening for the four hoof parts.

Finally, the whole cast gypsum is brushed on the wax horse, which is also called high-temperature gypsum. After the plaster has solidified, it is gradually and slowly heated to allow the wax to flow out. Gypsum shell empty, poured copper into it. How is critical copper melted? 1080 degrees!

First of all, open the abrasive, inject liquid wax into the abrasive, pack the wax module that has been solid after molding, coat several layers of refractory on the outside, and then melt the wax in the wax remover and discharge, roast the shell, pour the liquid metal into the hot cavity, and you can get jewelry.

Pay attention to the temperature of the plaster mold, and the temperature of the copper. Then there is the question of whether the gypsum and copper materials are good.

Gypsum needs to absorb water to solidify Solidified gypsum is a hydrate crystal At a temperature of more than 150-170, the water in the gypsum will be removed More than 400 The gypsum is completely dehydrated and turned into a powder How many degrees of copper water is cast.

Silver dollars can be minted into silver rings; However, it is as original as possible; Genuine products have collectible value, and genuine products have certain market potential.

Of course, it is possible to cast a ring from a silver dollar, but it is not recommended. Here's why:

1.The silver dollar is a currency that has been passed through through history and has the value of collectible cultural relics and should be protected.

2.From an economic point of view, it is not cost-effective! Some silver dollars are worth a lot, up to hundreds or thousands of dollars a piece, but they are not worth a few dollars when made into a silver ring.

3.Silver rings on the market today are generally made of 925 silver (that is, the silver content is, and the silver content of the general silver dollar is only about 80%.