| Customization: | Available |
|---|---|
| Application Fields: | Food, Electronic |
| Certification: | RoHS, UR, ISO, CE, CCC |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Oil-free air compressor electronic battery industry 10-3000m3/h 99.99% low price, high quality nitrogen generator
Because of the harm of lead to human beings, prevention of lead pollution has become a global trend.Japan began to implement lead-free manufacturing in large companies in 1998.Before 2003, Japan's SONY, Toshiba, Hitachi, NEC and other large companies have basically achieved lead free electronic products.Released in 2003, the ministry of information industry in our country "electronic information product pollution control management measures" file, rules from July 1, 2006, a total ban in using leaded solder in electronic products production, market requirement of electrical and electronic products do not contain lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether and biphenyl 6 kinds of harmful substances.Market trends will force electronic products containing lead solder out of the market.Therefore, it is an urgent task for us to adopt lead-free welding technology in wave soldering and reflow soldering.
Oil-free air compressor electronic battery industry 10-3000m3/h 99.99% low price, high quality nitrogen generator
Lead-free electronic manufacturing is becoming a major trend in the electronic industry, and all enterprises regard it as an effective means to improve competitiveness and expand market share.However, to realize this process is a systematic engineering, many unfamiliar technical problems will be encountered in the implementation of lead-free production.
Lead-free welding environment refers to the surrounding environment that determines the success of lead-free welding in the process of lead-free welding.A typical example is whether there is nitrogen protection in lead-free reflow welding, lead-free wave soldering and lead-free chip level repair.At present, the technology of lead-free reflow welding and lead-free wave soldering has been relatively mature, and the competition between brands has shifted from technology to price and service. The reason is that many manufacturers of lead-free reflow welding and lead-free wave soldering have consistent recognition of nitrogen protection technology.
Nitrogen is used for a variety of purposes in reflow environments. It protects the PCB surface from oxidation of pads and pins through multiple reflow environments, resulting in better wettability of pins and brighter solder joints.These are more pronounced in lead-free processes.The higher lead-free temperature accelerates the oxidation. The melting point of lead-free solder paste is between 217ºC and 221ºC, and some are as high as 260ºC. Compared with the 183ºC melting point of traditional low eutectic lead-free solder paste, the temperature is obviously greatly improved.Nitrogen will act as a shield against oxidation.Although it is not required in lead-free processes, the use of nitrogen increases the process window (located on the furnace) and many lead-free reflux producers are using it.Nitrogen reduces oxidation of the surface, allowing for better infiltration of the solder joints.
In addition, for multiple welding process is also key.For example, in the welding of double panels, nitrogen protection has a great advantage for the plate with OSPS in the multiple reflow process, because under N2 protection, the solderability of the copper pad on the plate and the circuit is well protected.Another benefit of using nitrogen is increased surface tension, which gives manufacturers more leeway in device selection (especially ultrafine spacing devices), and increases the surface finish of solder joints, making thin materials less susceptible to fading.
At present, the most popular method of nitrogen production is to produce nitrogen by a variable pressure suction nitrogen generator.In order to meet the SMT lead-free reflow welding, lead-free wave soldering environmental protection needs, to meet the personalized needs of customers, blue Sky enterprise research and development of lead-free process dedicated nitrogen machine: standard nitrogen production capacity of 15Nm3/ h-300nm /h, purity:99.9%-99.999%, gas quality to international standards, in line with the concept of creating creative business value for customers, to provide customers with complete and excellent pre-sale, sale, after-sales service and system solutions.Characteristics of pressure swing adsorption nitrogen production device:
1. Nitrogen machine has small volume, less power consumption, large production capacity and the most stable purity.
2.PSA equipment is the cheapest way to obtain nitrogen. Compared with the commercial price of nitrogen, the unit production cost of this equipment is much lower, which greatly saves expenditure and the investment cost can be recovered within 10-24 months.
3. Microcomputer control, automatic unmanned operation.
4. Simple maintenance and convenient replacement of spare parts.
5. Create value, 0.4 yuan to 0.6 yuan per cubic meter of nitrogen.
PSA variable pressure suction nitrogen production device system functions:
1. Online detection function of nitrogen purity
2. Nitrogen flow display and adjustment function
3. Nitrogen pressure display and adjustment function
4. Unqualified nitrogen alarm function
5. Unqualified nitrogen automatic emptying function
6. Unqualified nitrogen gas can be vented and stopped for a long time
Brief introduction to the separation process of PSA nitrogen production device:Using carbon as adsorbent, under a certain pressure, carbon molecular sieve oxygen adsorption than nitrogen in the air, so by programmable control pneumatic valve open, two adsorption tower can alternate cycle, pressure adsorption and vacuum stripping, complete separation of oxygen and nitrogen, get high purity nitrogen gas, equipment, process and store all low pressure gas,Eliminate the risk of high pressure and daily evaporation loss of liquid.
Nitrogen is a basic environmental substance. It is a colorless, odorless and chemically inert gas, accounting for about 78% of the earth's atmosphere. Gaseous nitrogen does not leave any chemical residues when used in the preservation process.In the practical application of beer preservation, the purity of nitrogen should be 99.95% in theory, and 99.5% in practice.Because from the effect price point of view, 99.5% of the nitrogen machine should be economical.
){kind=link}