Compared with other single products, the compact rack is a systematic project and also includes many service elements. Most customers buy for several years, maybe once every ten years, and it is not by people when they buy. There are inevitably many misunderstandings when buying dense racks. Let’s take a look~

Misunderstandings in choosing a compact rack

1. Too much emphasis on low prices and not on the quality of dense racks

Regardless of whether you choose a smart or manual compactor, at the same price point, you need to know which file compactor to choose. Price is often closely related to cost. Low-cost dense racks are not very good in appearance and design due to their low cost and poor quality. Experienced buyers understand that if you buy low-priced items, there are often many unpredictable security risks that cause many problems.

2. Choose the type of file rack at will

When building archives, you must consume rationally, and what suits you is the best. Because you don’t know the types of file racks, and you don’t know which product rack is suitable for you, it is recommended to choose carefully.

If you want your file management to be simpler, more technological and intelligent, and if you have enough money, you can buy a smart shelf. In the manufacturing process, the intelligent shelf is more integrated into the intelligent file management system, with intelligent voice control, security protection, sound and light positioning, and rapid retrieval of file information.

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Details can be accessed by clicking here:https://www.etegreen.com/blog/misunderstandings-in-the-purchase-of-compact-racks/

Calcium hydroxide, commonly known as hydrated lime, is a white powdery solid. The products produced by the professional calcium hydroxide production line are mainly used for rescue equipment such as compressed oxygen self-rescuers and positive pressure oxygen respirators, which are used to absorb carbon dioxide exhaled by miners.

CALCIUM HYDROXIDE PRODUCT INDEX

1. Whiteness: >90 degrees;

2. Fineness: >325 meshes;

3. Calcium content: >95%;

4. Moisture content: <2%.

ADVANTAGES OF CALCIUM HYDROXIDE

1. The whiteness is clear blue and white, and the appearance is good;

2. No impurities exist, high purity;

3. Good solubility, no precipitation, the solution will drop after being placed for more than a month and shake gently;

4. It is smooth after soaking in water and has good construction, which is beyond the reach of ash calcium produced in other places.

CALCIUM HYDROXIDE USE

The specific application of calcium hydroxide sewage treatment

1. It can neutralize free acid in wastewater and acid salt in wastewater.

2. In wastewater, where hydroxide ions can react with metal ions to produce water-insoluble precipitates.

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

The idler is an important part of the belt conveyor . If there is a problem with the idler, it will definitely affect the life of the belt conveyor . Since the idler is so important, the conveyor manufacturer will share with you what are the types of belt conveyor idlers?

1. Groove upper idler

The standard groove angle of the grooved idler is 35°, so the 35° grooved idler and the 35° grooved forward-tilt idler are mostly used in a conveyor, and in the selection of these two types of idlers There are three forms, namely full forward tilt and partial forward tilt (one set of forward tilt rollers in every 5 sets of upper rollers) and no forward tilt rollers. At present, the first two types of idlers are relatively common. Of course, there are 45-degree grooved idlers and 45-degree grooved forward-tilt idlers.

2. Buffer roller

Common buffer idlers have 35-degree and 45-degree grooved idlers. Under normal circumstances, if you are using a cotton fabric core conveyor belt, you can only use a 35-degree grooved buffer idler. The 45-degree grooved buffer idler can be used in the section where the guide groove is not impacted by the material.

3. Transition roller

4. Return roller

The standard style of the return idler is still the parallel lower idler, and it is also the lower idler that is used more at present. In addition, the parallel lower idler has two forms: single-roller type and double-roller type. As for which one to use, the designer should choose according to the bearing capacity of the idler. And according to the research, it is found that making the lower idler into a two-roller V-shape has a certain effect on preventing the deviation of the lower branch of the conveyor belt, especially the V-shaped forward tilting lower idler has a more obvious anti-deviation effect.

5. Comb roller

Comb rollers are not used in many places, and most of them are used in conveyors specially designed for conveying viscous materials.

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Details can be accessed by clicking here:https://www.zymining.com/blog/types-of-belt-conveyor-idlers.html

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