KR820002347B1 - Process for the preparation of pencil for iron plate drawing - Google Patents

Abstract

30wt. % bentonite and 1-2 wt. % pigment and water were mixed with talc powder to give compds, which were extruded uniformly, dried and calcined in the oven made by an earthen pipe at 840-1000oC for 3-5 hr.

Description

Method of manufacturing stone-peel core for cutting steel plate

In the present invention, talc (talc) is used as a predominantly caking and coloring power, and because it has a component similar to talc, it adds bentonite that is well combined with talc, and if necessary, adds a pigment of a desired color to prepare various colored stone cores It relates to a method for manufacturing a stone plate foundation stone pill characterized in that the.

Conventionally, the stone pill used in the cutting of iron plate, etc. has been used for cutting mold by using talc ore by cutting or cutting the tip of talc ore, but it is easily broken or crushed when used, The thickness of the wire was not constant, which made it difficult to precisely cut the wires, and there was a lot of unnecessary gemstone loss and time wasted every time you sharpen the edge.

Therefore, if the talc of the raw material used as it is, the price of the product itself was expensive. In addition, talc slate was a single color, so it was impossible to mark the wire when it was necessary to mark the conductor in various colors. In addition, it is inconvenient to carry, and it is easy to be broken or chipped, so there is a drawback that dust is generated.

The present application is easy to use and excellent in strength, not easy to break, unlike the conventional talcum plate only to remove the defects of the stone masonry by simply using a primitive method, easy to carry, and to reduce raw material costs The price is also inexpensive, and the color is related to the method of manufacturing a new stone pencil core which can be used to make different colored stone pencils as needed.

In other words, 68-69% of talc powder is mixed with 1-2% of the color pigment necessary for mixing bentonite 30%, and after mixing the appropriate amount of water in a mixer and training it in an extruder, it is extruded through a roller through a suitable thickness. . In this case, the pigment is mainly chromium oxide, but the lighter color is used compared to the dark one. In the case of white color, the white color of talc itself is used instead of the pigment. The extruded moldings (stone pen cores) are bundled several times and packed in tight contact with zones, etc., without any fluctuations of the contents, so as not to bend, thick or twist the contents of the stone pen cores, and then dry them in air. Let's do it. It is dried and then fired at 840-1000 ° C. in a furnace formed of earth pipes to complete the stone core of the present invention.

Example 1

Talc Powder 70㎏

Bentonite 30㎏

After stirring and stirring 2kg of chromium oxide (red), add a small amount of water and stir a little bit of water. Wrap 10 bundles extruded from the extruder in a zone and bundle them in bundles to dry them. The resulting product was heated to 5 ° C. for 5 hours.

Example 2

Talc Powder 70㎏

Bentonite 30㎏

A mixture of 1.5 kg of chromium oxide (blue) was mixed with a small amount of water slightly moistened with a little dampness. 10 cores extruded from the extruder were wrapped in a zone, bundled in bundles, and dried naturally to maintain a mold. It was heated at about 3 hours to obtain a finished product.

In the present invention, talc, which is a main material, is a hydrous magnesium silicate (Mg ₃ H ₂ (SiO ₃ ) ₄ ), and when decomposed at 840 ° C.-l000 ° C. during the process, the talc is dehydrated to become magnesium metasilicate (MgSiO ₃ ), which is extremely strong. As it is excellent, it is used well without break or break during use.Bentonite is composed of magnesium oxide and silicon oxide, which are the same as the main components of talc, so it has good mutual affinity or bonding power with talc, so physical and chemical At the same time, bentonite bonds better with talc with its strong coking force, reinforcing the defects that cannot be formed by talc alone, and the fired bentonite has a high strength with talc. It is used well and bentonite is well colored, so talc alone Reinforced by the difficulties it can optionally create a slate pencil deliberate colored in various colors makes it even more convenient to use.

In other words, it is made of talc and bentonite in combination with natural stone made of talc alone, so the material cost is low, the strength is mutually strengthened, and there is an advantage of producing colored stone pencils.

Moreover, since the product is similar to the pencil lead, the thickness of the product is similar to that of the pencil, so that the thickness is constant without any loss of time or loss of material cost or time of grinding or cutting when used in the form of pencil. If you draw, it is easy to cut the foundation, and there are various advantages that can be simply displayed with colored conductors on the required figure.

In addition, as described above, when used in the form of a normal pencil using such a stone core core, unlike a stone stone made only of natural stone, there is no dust or debris. It doesn't break on rubbery parts, so it works well.

Claims (1)

Mix 65-69% talc powder with bentonite at a ratio of about 30%, add 1% -2% of known pigments according to the color required, and knead and add water to mix them. The method of manufacturing stone masonry cores for iron sheet cutting, characterized in that it is closely sealed and dried in the air so as to maintain its original shape without fluctuation, and it is baked at 840 ℃ -1000 ℃ for 3-5 hours in a furnace made of earth pipes. .