French Yole Development consulting firm, forecasts that the UV LED with ultra-small, low-voltage DC and high surface

brightness advantage unmatched by traditional UV light source, the market has great potential, predicted that by 2015 its

annual growth rate of at least 20%. Later, with the technology to further improve the expansion of new applications, the UV

LED market is expected to maintain the trend of accelerated growth, the future is very bright.

At present, more and more countries started to restrict the use of mercury-containing products, the EU has made it clear in

2015, a total ban on the use of mercury-containing products. In addition, the United States also prohibits the application of

ozone disinfection in the home environment, because truly effective concentration is reached, is also harmful to people,

environment destruction.

At present, the downstream applications of foreign companies in this field has been walking in the front:

SET UV LED used in medicine big of Johnson & Johnson contact lens production line product packaging;

Samsung variety of refrigerator using UV LED for fruits and vegetables fresh and pesticide degradation;

The United States "where the Emperor Lo 6F" refrigerator began to use purple LEDs;

U.S. Verilux UV toothbrush sanitizer;

U.S. Germguardian home UV disinfection;

In fact only the field of home appliances, from refrigerators, home air conditioning, air purifiers, vacuum cleaners,

dishwashers, kitchen garbage grinder, washing machine and automotive air conditioning has a huge purple LED consumption

potential.

he laser sensor (a laser transducer) the use of laser technology to measure the sensor. It consists of laser, laser detector and measuring circuit. The laser sensor is a new measuring instrument, and its advantage is to achieve non-contact distance measurement speed, high accuracy, large measuring range, resistance to light, electrical interference ability. The laser is the most accurate size.

he laser sensor (a laser transducer) the use of laser technology to measure the sensor. It consists of laser, laser detector and measuring circuit. The laser sensor is a new measuring instrument, and its advantage is to achieve non-contact distance measurement speed, high accuracy, large measuring range, resistance to light, electrical interference ability. The laser is the most accurate size.

The present invention provides a seat belt pretensioners gas drug, the gas medicine containing adhesive, nitrogen-containing organic compounds, oxidants, and heat-absorbing agent, which, to the total weight gas-producing drugs as described in the binder content is greater than 10-20% by weight of the nitrogen-containing organic compounds content of 30-55% by weight, car seatbelt as described in the oxidant content of 30-55 weight%, the endothermic agent referred to was 4 – 15% by weight. Present invention provides a belt pretensioners gas drug due to the binder content is greater than 10-20% by weight, not only the gas production rate, so that the seat belt has good shrinkage performance, and low mechanical sensitivity, security, combustion when low noise, racing seat belt low temperature, thereby reducing damage to the crew and vehicle.

 With increasing levels of LED technology, LED lighting performance and constantly improve, especially in the LED light effect with high purity, bright and rich colors. Application of LED lighting products, covering almost the entire visible spectral range, and high color purity. The traditional way is to get the color of light to incandescent lamp and filters greatly reduce the luminous efficiency.

    Careful design and high-quality selection of the lamp shell structure of LED lamps improve the thermal performance of LED lamps, reduces the speed of the LED light decline. Also extend the life of the LED lighting, such as co-step production of LED downlight, the use of silver paint, metal structure, the shape and high-end of the downlights, light steel frame ceiling size, simple and beautiful design of the lamp body. Light source with low-power, high efficiency light LED lamp beads, reducing electricity use to save energy.

    Efficient use of energy, such as the the HEG professional development of LED flat light of extremely soft, high color rendering light can enhance the work efficiency, high-efficiency output lamps, more than 90% efficiency, reduce energy waste. LED flat light for the occasion used the office, conference room, library and indoor lighting, schools, hospitals and other indoor lighting.

    The light source of LED lighting uses no mercury, no ultraviolet light beam has been the support and love of the people, the LED is a solid light source, green, good seismic performance, solid and reliable. Particularly suitable for perfume shops, jewelry stores, museums, art galleries and other places, to meet the special requirements of the lighting of the display of goods. Modern life, economic and social promotion of the advantages of energy saving, economical, maintenance-free.

LED light source has a luminous directional, high luminous flux utilization and small size, easy to LED lighting design and control of light intensity distribution. Regardless of the application on any occasion, according to the different needs of the atmosphere can be a dynamic color control, brightness adjustable, with three primary colors of the LED assembly can be PWM to realize a change in color. LED can be used in home interior lighting low-voltage DC power supply, safe and reliable.

Beijing Gas Group this year will be the first batch of 67 000 old residential users of gas facilities and pipeline network transformation, the residents living in the layer will no longer introduced for the kitchen gas inlet valve security issues to worry about.

1800 residents of the area of ??the Shijingshan District, apple orchard Gas Group courtyard line last year, the pilot reform beneficiaries. Gas Group, through the transformation of the gas in the layer of the households into the inlet valve received outdoors, has been updated on the aging pipeline, pipeline valve replacement. Gas Group, responsible person, the introduction of the mouth of the valve out of, not only expanded the user in the kitchen area, easier maintenance staff repair and reduce pipeline leakage point.

The person in charge of this year transformation technology promotion in the 67000 users. Gas Group, through pre-assessment on the district s pipeline era, the warranty number and day-to-day leak frequency investigation, the city s total of 45 district 130,000 users exist gas pipeline safety problems, the Gas Group will take two years to complete the 13 million users of gas The transformation of the pipeline. Gas Group will launch a comprehensive transformation of the technical specifications of the gas safety risks, the new district will meet the conditions as much as possible early in the construction of the gas inlets valve out of the outdoors.

This project is a renovation project, located in the Beijing West Point Road, pipeline laying along the municipal road from north to south, the end of in Baiziwan South Road. Steam stainless steel pipe diameter DN500, the condensate stainless steel pipe diameter of DN200, stainless steel pipe fittings 1450 meters in length. Steam design parameters: temperature 300 ℃, pressure 1.4MPa. Condensate pipeline design parameters: temperature 100 ℃, pressure 1.0MPa. The original way of laying a trench in the form. Transformation of the trench, often on the structure using the method of settling old Jianxin. Although the technology is very mature,stainless steel pipe fittings but in the increasingly prosperous municipal road, this approach is increasingly difficult to achieve. In this paper, the engineering practice, and elaborated on the old steam pipeline in the modified design, the original trench, as well as overhead, trench, buried (steel sets of steel) three way of laying select flat routing, thermal compensation selection, pipeline elevation and other aspects. Care outside the steel tube characteristics of vacuum insulated stainless steel pipe fittings, prefabricated directly buried in the structure, insulation materials, and slide the bracket, jackets, steel pipe fittingscoating, fixed bearing, vacuum layer settings through walls waterproof-introduced. The steel pipe as thermal compensation, the displacement of space and stress solution of the original examination room. Detailed calculation of the steel outer casing pipe stiffness and radial stability, condensation water, stainless steel pipe fittings design. Lists the measured data after the implementation of the project, stainless steel pipe for the steam pipe design has accumulated valuable experience.stainless steel tee

Front of the car with a cross pin straddle, cross-foot front-end is equipped with wheel and bodywork two to the formation of four support operations, the center of gravity in the four rounds of support surface is relatively stable, Li Zhuo Reach forklift forks along the the Forklift vertical move back and forth. Pickup, unloading, fork out, the fork unloading of goods or with goods to move the fork to return to the location close to the body, so the stability of Li Zhuo forklift driving or Forklifts in the door frame Reach and fork forward two. Mast forklifts forks and door frame moving with the forklift approaching the cargo stack may reach the distance of the door frame to door frame height restrictions by the external space, it can only be in the front of the cargo pile goods operations. Fork Forklift mast fixed to the fork by means of the telescopic mechanism alone reach, if the ground has a certain space to allow straddle insert, the forklift to go beyond the front shelf, right after a row of cargo operations.

 (1) The seat belt should be hanging low, avoid swinging collision. 3m above long cord should be added to the buffer, except for the sling with self-locking hook.
(2) buffers, the speed difference between the device and self-locking hook can be used in tandem.
(3) does not Zhunqiang Sheng knot. Do not the Brigadier hook directly linked to the use of safety ropes should hang on the connecting ring.
(4) various components of the safety belt is not arbitrary demolition. Replaced with new rope to Jiasheng sets.
(5) two years after seat belt use, according to the bulk purchaser, shall be tested once. Wai pole with static load test, stretch 5mm 2 206N tension, such as breaking in order to continue to use. Suspension seat belt impact test, do a free fall test to 80kg weight, if not broken, the batch of seat belts may continue to use. The pumping tried transect, we must replace the safety rope to continue to use.
(6) the frequent use of the rope to regular visual inspection, abnormal, should be immediately replaced with new rope. Tape to use for 3 to 5 years, abnormal early retirement.

 
I. Introduction
In the trend of lightweight, 2/3 of the proportion of magnesium alloy is about 1/4 of the steel, aluminum, magnesium alloy applications more and more attention due to the proportion of magnesium alloy, while in Taiwan, close to the plastic but the intensity is far more than the plastic, plus the thermal conductivity for use in electronic products of the shell is very optimistic about the magnesium alloy die recently also attracted the interest of many businesses. However, due to the highly flammable magnesium alloy in the molten state and scrap state storage, melting and die casting of magnesium alloy special attention, and avoid danger.
Second, the body
The following description of the processing of magnesium alloy should pay attention to matters:
1, the safety of personnel
① a lot of damage obtained by the correct safety equipment to minimize, it is recommended
Handling of magnesium alloy, the best to wear the following equipment:
Made of wool material, non-flammable overalls.
Helmet with face mask.
Side of the protective glasses.
Safety shoes and socks to see them off.
Work gloves.
It is necessary to wear insulated apron.
The ② workplace should be showers in the vicinity, so that the liquid metal burn, immediately rinse.
(3) staff should have the correct security knowledge.
2, magnesium storage
① Meiding best kept indoors, to avoid water vapor or moisture savings in the ingot cracks or holes.
The ② magnesium can not and other flammable together, store the region of the ingot can not have an automatic sprinkler system.
3 Melting Points to note
Ingot To put into the melting stove, be sure to preheat to 150 ℃, casting factory in order to remove moisture.
② stove best double furnace design, when a stove burst, magnesium liquid can flow to the second furnace will not flow out to be dangerous.
The ③ supply protective gas installations should be a spare.
④ fuel, electricity, cooling water, gas supply equipment, should have a remote control, can be turned off so that at the time of the accident.
⑤ all ladle slag tools are dry, clean, and not the accumulation of water vapor, and use prior to preheating.
4, die-casting PRECAUTIONS
Solution of magnesium will react with water, the machine before the operation to clear the stagnant water inside the machine.
② Since most of the current release agent is water-based release agent, so do not spray too much release agent, but also careful not to let the release agent savings in the cavity or barrel.
5, machining Note
① to maintain a sharp tool, and pay the appropriate cutting angle.
② with faster feed to produce a thicker chip.
③ Do not let the tool on the workpiece friction.
(4) to keep the workplace clean and free from the accumulation of too many chips.
⑤ next to them the always appropriate extinguishing agent (dry flux (flux), dry sand, dry iron castings scrap and D-type fire extinguisher).
⑥ use the specific chip solution.
The ⑦ ventilation to be good.
⑧ chip stored in the appropriate premises.
6, grinding precautions
① grinding region can not be welded or fire.
② next to forever to them the appropriate extinguishing agent (dry flux, dry sand, dry cast iron scrap and D-type fire extinguisher).
③ grinding equipment shall be used exclusively.
(4) using wet dust collection equipment.
The ⑤ ventilation must be good.
⑥ in the appropriate area of ??electrical equipment should be explosion-proof, and guaranteed not to discharge.
The ⑦ operator clothes should be non-combustible, and no pockets.
7, fire precautions
Magnesium combustion emits white light, but its heat content is only half of the gasoline, so do not be too scared.
The place of the magnesium alloy die-casting should have a team responsible for the fire service, they should have received training to eliminate the fire of magnesium alloy and the local fire units.
All staff working in the magnesium alloy die-casting sites should know, definitely not good to destroy the fire caused by a magnesium alloy.
1 buildings
Buildings should be built with non-combustible material.
The drains should be kept away from the molten metal splash.
The flooring material should be non-absorbent, and heat.
Ventilation should be good, but melting the place not to have too vents in order to avoid metal oxidation.
Automatic sprinkler system can only be installed in place of the reach of the molten magnesium alloy.
2 Storage
Magnesium should not place inflammables.
Clean waste, such as circulation, overflow wells, should be placed on a noncombustible container.
Slag after processing in a noncombustible container.
Processing of dry debris should be placed in a moisture-free steel drums.
Wet debris generated by the processing should be placed in well-ventilated container.
(3) The fire extinguishing agent
For Fight magnesium alloy fire extinguishing agent: dry salt flux (Dry salt flux), the D-type fire extinguishers, dry, and oxides in cast iron, and dry sand.
The salt flux is the most effective extinguishing agent, because it can be in liquid magnesium alloy surface to form a barrier layer to prevent the oxidation of magnesium alloy. Where the die casting workplace always placed sufficient dry salt flux. Dry sand and dry, and oxides of cast iron scrap can be cooled and fire, but can not use silica sand, silica and magnesium to react. D-type fire extinguishers pressurized only as a last resort, because it is easy to fire to disperse.
Third, the conclusion
Attention to safety, and magnesium alloy die-casting and dangerous than the aluminum alloy steel castings. However, if do not pay attention, and magnesium alloy die-casting will indeed lead to greater disasters. The above, we can sum up the basic principles of safety management of magnesium alloy die-casting is as follows:
The ① melting of magnesium alloy never hit the water.
(2) must not allow the accumulation of magnesium alloy.
The ③ ventilation must be good.