Common types and uses of pliers Wire Stripper,Needle-Nose Pliers,Wire Cutters,Curved Nose Pliers Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaou.com
(1) Nitrogen fertilizer. Counterfeit urea in the market is generally the bottom of the fertilizer bag is ammonia bicarbonate, above is urea, which is characterized by good fluidity above, no flow or even agglomeration below, and can smell strong ammonia smell, you can judge this is A pseudo urea mixed with ammonium bicarbonate. If the flow is good, only the particle color and particle size are inconsistent, it is a mixture of urea and ammonium nitrate. The two can be further distinguished by the following three aspects. 1 appearance. Urea and ammonium nitrate are odorless white particles. The difference is that urea is translucent particles, the surface is not reflective, and the surface of ammonium nitrate particles is bright and has obvious reflection; 2 feel. Urea is smooth, loose, and has no moist feeling; ammonium nitrate is smooth and moist; 3 fires. Put the two substances on the red charcoal or iron plate, the urea melts quickly, and the white smoke has ammonia smell; the ammonium nitrate is intensely burned, emitting strong light, white smoke, accompanied by a "squeaky" sound.
(2) Phosphate fertilizer. The main counterfeit calcium in the market is phosphogypsum, calcium magnesium phosphate fertilizer, waste cement residue and the like. The way to distinguish it is: 1 appearance. Calcium is dark gray or grayish white, light gray loose powder, sour; phosphogypsum is grayish white hexagonal columnar crystal or crystalline powder, no sour; calcium magnesium phosphate has no sour taste, is very dry vitreous fine or Fine powder; waste cement slag is gray powder, dull, with more hard materials. After pulverization, the powder is thicker and has no sour taste; the color of brick powder is blue, the powder is thicker and has no sour taste; . The calcium is heavy and the hand feels but it is not frivolous. The phosphogypsum and calcium magnesium phosphate are hardly soluble in water, and the waste cement is added with water to form a slurry and re-solidify. In the identification, if the acidity is too rich and the water is too much, it is a non-product calcium which is unqualified.
(3) Potassium fertilizer. Commonly used in the market are imported and domestically produced potassium fertilizers, which are sold as imported potassium fertilizers. The color is white or red, and the potassium fertilizer after mixing is poor in fluidity. Potassium sulphate and potassium chloride, potassium and magnesium fertilizers are mixed and sold as potassium sulphate. The blended potassium fertilizer is light yellow, white or yellowish, red crystal. In addition, sodium chloride (salt) can also be used as a potassium chloride. A small amount of fertilizer can be placed on the fire. If the purple flame is potassium chloride, if it produces a yellow flame, it is a counterfeit product.
Pliers have many functions and are used in many industries. The pliers used in different industries are also different. Generally, the more commonly used pliers are:
1. Wire stripper
Wire strippers are commonly used tools for internal electricians, motor repairs, and instrumentation electricians. They are composed of knife edges, crimping ports and clamp handles. They are mainly used for stripping plastic and rubber insulated wires and cable core wires.
2. Wire cutters
Also called a vise, it is a kind of clamp and cutting tool. It is composed of jaws, tooth edges, knife edges, guillotines and pliers handles. It is mostly used to pick up nails or break nails and iron wires.
3. Nozzle pliers
It can be divided into electrical and electronic categories. It is mainly used for cutting injection molding machine products, plastic products, and injection nozzles. It is also suitable for cutting metal products and electronic component pins.
4. Needle-nose pliers
Also known as trimmers, pointed pliers, and pointed pliers. They are composed of pointed tips, knife edges and pliers handles. They are generally made of 45# steel. They are used to cut single and multi-strand wires with thinner diameters and to give orders. Stranded wire joint bending, stripping of plastic insulation layer, etc., can be operated in a relatively small working space.
5. Curved nose pliers
Also called elbow pliers, its function is similar to that of needle-nose pliers without cutting edge, and it is suitable for use in narrow or recessed working spaces.
6. Flat nose pliers
It is a commonly used tool for assembly of metal parts and telecommunications engineering. It is generally used to bend metal sheets and metal filaments to make them into the required shape. In repair work, they are used to install and pull out pins, springs, etc.
7. Diagonal pliers
Mainly used to cut metal wires, flat-nose diagonal pliers are suitable for use in recessed working spaces.
8. Top cutting pliers
End-cutting pliers are similar to diagonal pliers. They are mainly used for cutting steel wires with the cutting edge at the top.
9. Water Pump pliers
The function is similar to a pipe wrench, but it is lighter, smaller and easier to use than a pipe wrench. However, the clamping force is not as good as a pipe wrench. Generally, it is only suitable for household non-professional emergency or simple installation of water pipes.
10. Slip joint pliers
The shape resembles a carp. The opening width of the jaws has two adjustment positions, which can be enlarged or reduced. It is mainly used to clamp round parts. It can also replace small nuts and small bolts with a wrench. It is often used in the auto repair industry.
11. Circlip pliers
Commonly known as circlip pliers, it is a special tool used to install inner and outer circlips, and can also be used to remove circlips. .
12. Vigorous pliers
It is mainly used for clamping parts for riveting, welding, grinding, etc. It can also be used as a wrench. Its characteristic is that the jaws can be locked and generate a large clamping force to prevent the clamped parts from loosening.
How to quickly identify fake deterioration fertilizer
The method for identifying the quality of fertilizer can be summarized into five words, namely, seeing, touching, burning, testing, and testing. The identification methods for several types of main fertilizers are as follows:
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