Generally, as the object of labor extraction and agricultural and animal husbandry products are called raw materials, the processed raw materials (such as steel, cement, etc.) is called material. Both collectively referred to as "raw materials". Some raw materials are raw materials in one enterprise and finished products in another. Industrial raw materials come from some industrial enterprises and agricultural production. The former mainly includes products produced directly by the extractive industries, such as raw coal, crude oil, logs, a variety of metal and non-metallic ores; produced by the extractive industries and processed products, such as pig iron, steel, cement, coal and petroleum products; synthetic materials, such as synthetic fibers, synthetic plastics and so on. These raw materials are generally unaffected or less affected by natural conditions and are increasingly produced by chemical synthesis. The latter comprises mainly plant or animal products produced by agriculture, such as cereals, raw cotton, sugar cane, livestock, fish, dairy, etc.; and products produced by agriculture that are also processed, such as flour and leather. The proportion of these two types of raw materials can indirectly reflect the level of industrial development. With the development of productive forces, by the industrial production of raw materials in the overall proportion of raw materials will be more than by the agricultural production of raw materials, and has a tendency to further increase. Vigorously develop industrial production of raw materials is the main direction to solve the problem of raw materials, but at the current level of science and technology, it is mainly used for the production of means of production, daily necessities and wearing goods, etc., can not replace food, textile, paper and other industries required by the agricultural production of raw materials. Therefore, the proportion of raw materials produced by agriculture in the composition of raw materials, although there is a downward trend, but the absolute amount will continue to grow.
Semi-finished products For example, if you want to make sulfuric acid, then sulfurous acid is a semi-finished product.
The finished product is sulfuric acid.
Your question is too general.
Question 2: What are the commonly used materials for industrial products and how to apply them Blister ---- is a plastic processing technology, the main principle is to spread the hard plastic sheet heating and softening, vacuum adsorption on the surface of the mold, and then molded after cooling. Its commonly used plastic hard sheet are:
First, PVC sheet toughness is high, not easy to burn, combustion will produce chlorine gas, a certain impact on the environment, PVC is easy to heat sealing, can be used to sealing machine and high-frequency sealing, is the main raw material for the production of transparent blistering products.PVC sheet is a versatile and popular material, PVC film can be divided into environmentally friendly and environmentally friendly two kinds of materials can be made of Transparent, color, anti-static, gold-plated, flocking and other kinds of plastic packaging products, which is characterized by high transparency, good surface luster, less crystal points, small water lines, wide range of uses, impact resistance, and easy to form, the product is widely used in toys, food, electronics, medicine, electrical appliances, gifts, cosmetics, stationery, and other products external packaging.
Second, PS hard sheet low density, poor toughness, easy to burn, combustion will produce styrene gas (a harmful gas), so it is generally used to produce a variety of industrial blister trays. PS sheet is a new environmentally friendly packaging materials developed in recent years, by virtue of its excellent thermoforming properties, good environmental performance and hygiene performance, widely used in medicine, food, toys, electronics.
Third, PET hard sheet toughness, is a new material developed in recent years. With its excellent toughness, high strength, high transparency, as well as recyclable, easy to burn, burning does not produce harmful gases, is an environmentally friendly materials and gradually outlawed PVC, but the price is high. Suitable for high-grade blister products, Europe and the United States, the general requirements of the blister PET material, but its high melting point, to the high-frequency encapsulation brings great difficulties, in order to solve this problem, people in the PET surface composite on a layer of PVC film, named PETG, but the price is higher. Mainly used for electronics, food, toys, color box window, collar tray, footwear packaging. The advantages are as follows:
1. Excellent transparency and finish, good display effect.
2. Excellent surface decorative properties, can be printed without surface treatment, easy to press patterns, easy metal processing (vacuum plating metal layer)
3. Good mechanical strength.
4. Good barrier performance to oxygen and water vapor.
5. Good chemical resistance, can withstand the erosion of a variety of chemical substances.
6. Non-toxic, hygienic and reliable, can be used for packaging of food, drugs and medical equipment, and can be Y-ray sterilized for the packaged items.
7. Good adaptability to environmental protection, can be economically and conveniently recycled; incineration of its waste, does not produce environmentally harmful substances. PET sheet is considered to be in line with (ROSH) environmental protection requirements of an ideal packaging material. PETG sheet, also known as GPET sheet, is a non-crystalline PET resin modified with cyclohexanediol.The biggest advantage of PETG sheet is good heat sealing performance, easy to operate when sealing, good sealing effect and easy glue bonding. At the same time, its chemical resistance, optical properties, scratch resistance are also very good.PETG through the U.S. FDA on food contact standards, can be used in food and personal care products packaging, medical and health equipment food and other fields, but also for electronic device packaging. Its advantages are as follows:
1, good transparency, suitable for products requiring high transparency.
2, excellent impact strength and rigidity
3, excellent processing, can be used sawing, die-cutting, drilling and laser cutting and other processing methods, but also cold bending and hot bending, adhesion, welding and polishing, printing and painting; and cold bending does not whiten the appearance of bright.
4, good thermoforming, no preheating can be molded, high precision, good deep molding, no rupture and uniform thickness.
5, low combustibility, good fire resistance, non-flammable, low smoke, no harmful substances after burning.
5, PP sheet is PP resin by beer out, calendaring, cutting and other processes and made of lightweight, bright and calm surface, good heat resistance, high mechanical strength, excellent chemical stability and insulation, non-toxic and other characteristics, after thermoforming can be made into beverage cups, food containers and other daily necessities.
Six, GAG is a three-layer composite sheet. It is a three-layer composite sheet produced by the middle layer of APET, the upper and lower layers of PETG raw materials in the appropriate proportion **** extrusion, especially suitable for high-frequency heat sealing bonding and glue bonding boxes. Its advantages are as follows:
1, good transparency, transparency up to 90% or more, good texture, suitable for products requiring high transparency.
2, excellent impact strength and rigidity, hard and durable material, suitable for high impact strength applications.
3, excellent processability, can be used sawing, die-cutting, drilling and laser cutting and other processing methods, but also cold bending and hot bending, adhesion, welding and polishing, printing and painting; and cold bending does not whiten, ...... >>
Question 3: What are the material procurement costs of industrial enterprises include The material procurement costs of industrial enterprises are mainly: by the purchase price of the material and the purchase cost of the two parts of the composition.
(1) the purchase of materials, the settlement price is the purchase price. (2) to pay a variety of material procurement costs, including transportation costs, handling costs, insurance costs, packaging costs, storage costs, storage before the selection of finishing costs, as well as reasonable losses during transportation.
(3) Taxes (such as tariffs, etc.) and other costs borne by the purchased materials.
Question 4: What are the green and environmentally friendly materials for industrial production! Steel, cement, glass, aluminum products, copper products, wood, bamboo products, paper, cloth, gypsum, ceramic tiles, rock wool, and so on. Wreck for reference, thanks.
Question 5: What are the seed plants used as industrial raw materials (to five) Castor, oil palm, flax, ramie, rubber.
Question 6: What are the more industrial raw materials consumed by the factory? Industry is now using a large amount of starch, used as a pharmaceutical tablet filler, various types of food, the production of maltose, the production of glucose, etc., the consumption should be the largest raw material, these things are ordinary people can afford to eat, or some of the intermediates in the production of high-end products
Question 7: What are the commonly used industrial sound-absorbing materials Wooden acoustic panels (grooved wood, wood), fabric acoustic panels, wood fiber boards, wood fiber boards, polyester fiber acoustic panels and so on
Question 7: What are the commonly used industrial sound-absorbing materials? Polyester fiber acoustic panels, etc.
Question 8: What are the commonly used metal materials in industry and life? Iron The most commonly used metals in daily life, the range is extremely wide, as far as the eye can see, there must be iron
Steel and iron are iron-carbon alloys, commonly used in industry as a number of important structural components, but also special performance of high-strength
steel, stainless steel, heat-resistant steel. Life has your rice bowl that is stainless steel (of course, there are also enameled).
Aluminum and aluminum alloys, considerable density-strength ratio, used for structures that require lightweight materials, also used in cables and wires
Copper and copper alloys, mainly wires and cables
Tin, white on the circuit boards on the tiny soldered parts
Lead, the original counterweight or the sealing of the equipment, higher density
Mercury, mercury, thermometers, manometers (technically speaking, only the first four commonly used)
Mercury, thermometer, manometer.
Other metals are either less commonly used or are added to the above as alloying elements to enhance their original properties
Mercury, mercury, thermometers, manometers (strictly speaking, only the first four are commonly used).