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To put it simply, forging is to smash metal into the shape you want, and casting is to melt the metal and then re-solidify it into the shape you want. Forging is to mechanically shape metal into the shape you want. (There are two methods, cold and hot.) Casting is to melt the metal and pour it into a prepared sand mold or mold. After cooling, it solidifies into the shape you want. .

Forging is a processing method that uses a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging with certain mechanical properties, certain shape and size, and is one of the two major components of forging (forging and stamping). Through forging, defects such as as-cast looseness produced by the metal during the smelting process can be eliminated, and the microstructure can be optimized. At the same time, due to the preservation of the complete metal streamline, the mechanical properties of forgings are generally better than those of castings of the same material. For important parts with high load and severe working conditions in related machinery, forgings are mostly used in addition to rolling plates, profiles or welded parts with simple shapes.

A processing method of using a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging with certain mechanical properties, certain shape and size. One of the two major components of forging. Through forging, the as-cast looseness and welding holes of the metal can be eliminated, and the mechanical properties of forgings are generally better than those of castings of the same material. For important parts in machinery with high load and severe working conditions, forgings are mostly used in addition to rolling plates, profiles or welded parts with simple shapes.

FORGING CAN BE DIVIDED INTO

①OPEN FORGING (FREE FORGING)

Using impact force or pressure to deform the metal between the upper and lower abutting irons (anvil blocks) to obtain the required forgings, there are mainly two types of manual forging and mechanical forging.

②CLOSED MODE FORGING

The metal blank is compressed and deformed in a forging die cavity with a certain shape to obtain a forging, which can be divided into die forging, cold heading, rotary forging, extrusion, etc. According to the deformation temperature, forging can be divided into hot forging (processing temperature is higher than the recrystallization temperature of the billet metal), warm forging (lower than the recrystallization temperature) and cold forging (normal temperature). Forging materials are mainly carbon steel and alloy steel of various compositions, followed by aluminum, magnesium, titanium, copper, etc. and their alloys. The original state of the material is bar, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of ​​the metal before deformation to the die cross-sectional area after deformation is called the forging ratio. Correct selection of forging ratio has a lot to do with improving product quality and reducing costs.

THE DIFFERENCE BETWEEN CASTING AND FORGING

1. THE PRODUCTION PROCESS IS DIFFERENT

Casting is a forming. After the metal is melted into liquid, it is cast into a casting cavity suitable for the shape of the part, and after it is cooled, solidified and cleaned, the processing method of the part or blank is obtained. The foundry major focuses on the metal smelting process and the control of the process during the casting process.
Forging is slow forming. The method of applying pressure, extrusion, hammering and other methods to the metal blank with a forging machine makes the metal material in the plastic state a processing method of a workpiece with a certain shape and size. Forging is plastic forming in the solid state, which can be divided into hot working and cold working, such as extrusion, drawing, pier thickening, punching, etc.

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Details can be accessed by clicking here:https://www.gold-emperor.com/the-difference-between-forging-and-casting/

The flexible bearing of harmonic reducer is a kind of bearing of harmonic reducer. It is a kind of bearing used outside the harmonic generator, which can realize the speed change requirement of large transmission ratio. Because of its special overall structure, it is installed in time is different from other types of bearings.

Assembly method of flexible bearing of harmonic reducer

1. Arc fill ball groove method

This method is actually that when the ball filling angle is greater than 195°, a circular arc groove that is larger than the diameter of the steel ball is opened in the distance from the inner and outer ring ribs to the bottom diameter of the groove. The steel balls are respectively filled into the channels. The arc ball-filling groove method has low installation efficiency, high production cost, and poor quality control, because if the ball-filling groove is deep, the ferrule will be scrapped; if it is shallow, the steel balls cannot be filled. Improper grooving will greatly reduce high-speed performance and limit axial play.

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Details can be accessed by clicking here:https://www.prsbearings.com/a/news/Harmonic-reducer-bearing-installation.html

Vegetables are grown in greenhouses, some are planted directly, some are planted with seedlings, and some are planted with vertical grow racks. No matter what kind of planting method, the growth of plants is inseparable from light, so if indoors, greenhouses, plant growth racks. In order to ensure the healthy growth of the seedlings, it is necessary to use the plant supplementary light for supplementary light in the place where the high-quality light is affected. There are many types of plant fill lights. How to choose when filling light for vegetable seedlings?

When using plant fill light to fill light, you should pay attention to many issues, such as the requirements of light intensity for the growth of vegetable seedlings, such as the limitations of planting environment and space on fill light conditions.

The power of the plant fill light determines the light intensity, so when choosing a fill light, if the vegetable seedlings are light-loving plants, they have greater requirements for light intensity when growing, and a high-power fill light should be selected. If you are growing vegetables at home, you can choose to use LED plant fill lights. LED fill lights are small in size and are more suitable for growing environments with limited space, and LED fill lights are more energy-efficient.

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Details can be accessed by clicking here:https://www.etegreen.com/blog/plant-fill-light-choose/

The compact rack is mainly used in enterprises, books, archives and other places. It has large storage capacity, large occupied area and good storage quality. In order to better preserve archive data, many companies will choose different racks according to different storage items. For example: base map rack, voucher rack, file rack. So what are the requirements for the installation environment of the dense rack? How to maintain it?

Environmental requirements for rack installation

1. The storage place must be waterproof and moisture-proof, because most of the documents are paper. If they are placed in a humid place, even if they have the functions of moisture-proof and dust-proof, they cannot be stored for a long time.

2. Generally, the suitable temperature for storing files is 14-24°C-2°C, and the relative humidity is 45%-60%-5%. The temperature and humidity within this range are better.

3. The size of the space is limited. The installation of the compact rack requires a large area. If the space is small, the compact rack cannot be placed or moved, and it is inconvenient to take documents.

4. The height of the space during the installation of the compact shelf is 30 cm higher than the height of the actual compact shelf. For example, the height of the compact shelf is usually 2.3 meters, and the height of the archive room during installation should be above 2.6 meters. Lower clearance for installation and air circulation.

Floor load-bearing requirements of the installed floor

1. When installing the rack, it is important to consider the load-bearing of the floor and the floor. The usual rack requires a load of at least 200 kilograms per square meter, and the rack manufacturer will consider the size, placement and user requirements between the documents. needs to determine its weight.

2. Therefore, you must measure it carefully during installation. If it fails to meet the load-bearing standard, you can consider how to reinforce it before you can install it. If the load-bearing of the floor or floor cannot be determined, the load-bearing test of the archives should be carried out in time.

Maintenance method of compact rack

1. Avoid collisions

After purchasing the compact rack, you should pay special attention to it. When carrying it, you should put it down gently to avoid contact with hard objects. It can’t be put together with hard objects, and it can’t be moved often after placing it, and the floor must be flat.

2. Clean and dust

When cleaning the stacker, use a cotton cloth and wipe it clean. Use a soft wool brush for dusting in the recessed and embossed patterns on dense shelves.

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Details can be accessed by clicking here:https://www.etegreen.com/blog/environmental-requirements-for-rack-installation/

Calcium hydroxide equipment is mainly used to produce calcium hydroxide and other chemical products, and almost the entire production is carried out on this equipment. When feeding, you must pay attention to the relevant requirements, and there are also many things to pay attention to.

PRECAUTIONS WHEN FEEDING CALCIUM HYDROXIDE EQUIPMENT

1. The calcium hydroxide equipment cannot meet the classification requirements of micropowder in the cement grinding system, mainly because the specific gravity of the micropowder is much smaller than that of the cement, so the equipment has a weak ability to identify the micropowder.

2. When entering the negative pressure operation, the grinding material is fed from the inlet of the calcium hydroxide equipment of the distributor, and meets the vortex airflow entering the primary air outlet. After being fully dispersed by the suspension dispersing mechanism, the fine powder enters the grading area through the secondary air outlet in the airflow. The resulting horizontal vortex field is graded.

3. The discharge temperature is controlled at about 45 degrees Celsius, and the water content of the discharge is controlled at about 1%. In this way, the agglomeration of finished products is prevented, and the efficiency of powder selection and the waste of slag discharge are improved.

4. The fine powder enters the rotating cage, and the negative pressure air is pumped into the subsequent dust collector from the fine powder outlet, and the finished product is collected by the dust collector. The coarse powder falls into the cone, is discharged through the coarse powder outlet, and returns to the mill for grinding again.

Details can be accessed by clicking here:https://www.ly-gaifeng.com/blog/cautions-for-feeding-calcium-hydroxide-equipment.html