Some Knowledge about Refrigerant

Refrigerant is the working fluid which is in refrigeration and air conditioning systems to transfer thermal energy to produce the effect of freezing. It can be divided into categories according to work method, namely the Primary and the Secondary refrigerant. Classified according to material properties, it can be divided into Natural refrigerants and Synthetic refrigerant.

In the air conditioning system, it is the substance that makes heat begin to transfer through evaporation and condensation. It is always known as Freon.

Ideal Refrigerant  

non-toxic, non-explosive, non-corrosive metal and non-metallic effect, no burning, easy to detect leakage, chemical stability, non-destructive for lubricating oil, with more latent heat of vaporization, environmentally friendly.

Secondary refrigerant and refrigerant agent are collectively called refrigerant. In air conditioning systems, it can transfer thermal energy to produce cooling effect. Freon is an absorb easily heat into a gas, and give out heat easily to become liquid. In the early time, refrigeration plants use ammonia as freon, ammonia can give out heat easily to become liquid upon compression. When the liquid becomes gas, it will need heat.

Every common air-conditioners are used Freon CFCs. But previously these CFCs would destroy the ozone layer. Nowadays scientists have now developed the CFCs which does not destroy the ozone layer.

Common Refrigerant
 R12；R22；R134a；R407c；R410a

Because of the corrosion of refrigerant, general enameled wire will reduce life span. But Zhengzhou LP Industry Co.,Ltd has many kinds of enameled wire which have good refrigerant resistance.

Performance Comparison between Enameled Aluminum Wire and Enameled Copper Wire

Performance Comparison: Chart One

Performance	Unit	Aluminum	Copper	Remarks
Tensile Strength	N/m㎡	120	260
Resistivity（20℃）	Ω.mm2/m	≤0.028264	≤0.017241
Temperature Resistance Coefficient	aR /℃-1	0.00429	0.00393	Pure Metal
Thermal Expansion Coefficient	Μm/m. ℃	23.8	16.6
Heat Transfer Coefficient	W/m.K	226	402
Melting Point	℃	660.4	1083	Pure Metal
Boiling Point	℃	2467	2567	Pure Metal
Density	g/mm³	2.703	8.92	Pure Metal

Performance Comparison: Chart Two

Performance	Enameled Aluminum Wire	Enameled Copper Wire
Direct Current Resistance（IACS）	100%	62%---65%
Breakdown Voltage	Good	Good
Film Continuity	Good	Good
Elongation	Excellent	Excellent
Resilience	Good	Excellent
Coiling	Good	Good
Degradation Resistance	Good	Excellent
Single Paint	Excellent	Good
Repeated Paint	Excellent	Bad

The Differences Impact on the Use: the Design of Electric Machinery

1,  The diameter selection of conductor

2,  Motor wire groove design

Reason: the contrast of resistance value

The Differences Impact on the Use :the Method of Paint Removing

1, The Paint Removing of Enameled Aluminum Wire in the Incoming Inspection Process

Special paint remover----class 130 and class 155 enameled aluminum wire

Concentrated sulfuric acid---all types of enameled aluminum wire

2, The Paint Removing of Enameled Aluminum Wire in the Incoming Inspection Process

Special paint remover----class 130 and class 155 enameled aluminum wire

Stripping salt---- all types of enameled aluminum wire

Mechanical stripping---large types of enameled aluminum wire

The Differences Impact on the Use: Attended Mode

The attended mode of enameled aluminum wire

1, Paint removing + Dedicated solder wire

2, Paint removing+ Special flux+ Ordinary solder

3, Terminal Connection

The Differences Impact on the Use :Winding

1, Because the tensile strength of aluminum wire is smaller than copper wire, the winding speed of aluminum wire is slower than copper wire.

2, At the same time, because of smaller tensile strength, winging tension of enameled aluminum wire will be smaller than copper wire.

The Development of China’s Enameled Wire Industry

What is enameled wire?

Enameledwire regards as winding for electromagnetic coil using insulation paint as an insulating coating, also known as magnet wire. Enameled wire is the main raw materials for electromagnetic windings of electrical, electronics, household appliances, telecommunications, and electronic instruments.

The Present Situation of China’s Enameled Wire Industry

After joining the WTO, with the rapid development of industrial electronics, household appliances, telecommunications, electronic products, enameled wire has a broader applications and markets. China has become the world's manufacturing center and processing base of enameled wire. Chinese enameled wire production and sale accounts for about 30 percent of global production. Chinese production of enameled wire in the last twenty years increase more than 10% per year. It can be predicted that it will increase to about 50% and China can become a real big and strong enameled wire production.

National tiny electromagnetic enameled wire sales from 2004 to 2006  (including imports) was approximately 290,000 tons, 310,000 tons and 340,000 tons with an average annual growth rate of over 8%. Among them, the line field of the relay grow especially. The average annual sales increase of 20%. Electronic components become lighter and thinner and consumers pursue for thin and tiny electromagnetic. Because of those reasons, demand of enameled wire grows year after year. Total fine electromagnetic enameled wire’s sales in major market amounted to 460,000 tons in 2010. The average annual increase of about 9%. In 2012, this data was 544,000 tons.

Some problems in China’s enameled wire industry

Because the wide use of the relays, micro-motors, electronic transformers, solenoid valves and other electronic components in automobiles, household appliances, mobile phones, computers, office supplies and other fields, fine electromagnetic enameled wire grows steadily as an important raw material for electronic components. Through years of development, China has become the largest producer and user of relays, micro motors and electronic transformers and other electronic components. But due to the gap of process, technology and equipment of  international, fine enameled wire production capacity in the country is far unable to meet the demand. Chinese fine enameled wire can only have about 30% of the amount from the domestic manufacturers.

The future situation of China’s enameled wire industry

Chinese future growth on the part of local micro electromagnetic enameled demand from the market demand for natural growth, partly from import substitution, especially the development of the huge potential in the field of import substitution. According to the special committee investigation and analysis China Electrical Equipment Industrial Association Branch Wire and Cable wire, Chinese will become  a truly big and strong country of enameled wire production.

Zhengzhou LP Industry Co., Ltd

As a China’s professional manufacture of magnet wire, Zhengzhou LP Industry Co., Ltd can provide different kinds of enameled wires, such as enameled round or flat aluminum wire, enameled round or flat copper wire, ultra fine rectangular enameled copper wire and so on. Zhengzhou LP Industry Co., Ltd can provide clients best products with best quality and best service.

Four Bounding Methods For Self-Bounding Copper Wire

Four Bounding Methods For Self-Bounding Copper Wire

Enameled Square Copper Wire,enameled wire importer for motors-LP industry

Enameled Square Copper Wire,enameled wire importer for motors-LP industry

Oxidative Aluminum Wire

Oxidative Aluminum Wire

What is the difference of Enameled wire ,magnet wire and Insulation wire?

We all know the enameled wire and magnet wire are two kinds of insulated wires，both Played an insulation role.
If people do not very understand its natural Properties, they might be confused with the magnet wire and enameled wire, because there are main properties are insulated.

In fact the enameled wire, magnet wire and insulated wire is essentially different, they have a big difference with each others when they are used.
Our daily talk about the “insulation wire “are usually used in high frequency places, while the enameled wire is rarely used in this area.

Their different purpose mainly depending on the insulating layer of different materials. The insulation layer of the enamel wire is not very good for the high frequency function, but insulated layer of magnet wire is very good.
In the high frequency current environment, the high frequency current is transmitted through the conductor's appearance, but the low frequency current is the main transmission through the conductor cross section.. This also determines the main difference.

From this point of view, the conductor density of the insulation wire is less than enameled wire, The reason is that the insulation wire is mainly used in the high frequency environment, which is the appearance of the conductor.; While the enameled wire is used in the low frequency environment, the whole conductor cross section is basically.
This is only relevant to its environment, and from here we can see that the distinction is obvious and is not hard to distinguish.

Poster：Angelia.Dong
Email：lp14@cnlpzz.com
TEL：0086-371-55625861
Skype：zzlpchina