Adhesive door frame edges need to be selected according to the material, generally you can use instant glue, slow-dry glue, nail-free glue, UV shadowless glue, swelling glue, etc.
UV shadowless glue belongs to two kinds of bonding. It is only effective if it is a transparent part. The bonding strength is also relatively good, and it dries quickly. After this glue is irradiated by ultraviolet rays, the reaction will be strong and the efficiency is very high. .
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During the “Eleventh Five-Year Plan†period, the state implemented a 100 billion yuan road construction project. Among them, 10 billion yuan in the eastern region, 43 billion yuan in the central region, and 47 billion yuan in the western region. By 2010, the national highway network skeleton will basically be formed, and the technical level of main highways will be further improved.
At the end of this year, 12 main trunk lines of “five vertical and seven horizontal†were established. By 2010, eight western provincial highways have been basically completed. The eastern region basically forms a highway network, and the central region basically completes a relatively complete highway network. Build and renovate 1.2 million kilometers of rural highways to basically realize all asphalt and cement roads in all townships in the country.
Taking the national expressway network as the carrier, the construction of transportation stations with the national road transport hub as the leader is accelerated, and a fast passenger and cargo transportation network is basically formed. Achieve a round trip within 400 to 500 kilometers on the same day and arrive within 800 to 1,000 kilometers on the same day. The country’s rural passenger and freight transport network is based on rural roads and is spread across urban and rural areas.
"Classification and rating of commercial trucks" will be introduced this year. This standard will be used as the basis for the rating of the shipping management department. Vehicles that do not meet the road classification will be restricted to go on the road. The content of the standard includes new grades of trucks and mandatory inspections.
It is reported that trucks will be divided into three types. Each class has three levels: beginning, middle, and high. Vehicles that do not meet the corresponding technical requirements cannot travel on grade highways and highways.
The central government continues to increase its support for "agriculture, rural areas and farmers", and the market space for light trucks will continue to expand. A large number of farmers began to eliminate agricultural vehicles. Therefore, light truck products with high safety, good carrying capacity, high cost performance, and high added value become the preferred vehicles for farmers. Among them, the mid-to-low-end light truck will become a new bright spot.
July 1 this year, the implementation of the National III emission standards. The new policy poses a severe challenge to domestic light truck companies, but also brings new opportunities - the introduction of new products with low fuel consumption, low operating costs, high cost performance, and ability to meet changing environmental requirements has become one of the company's core competitiveness. .
The "Limits on Fuel Consumption of Light Commercial Vehicles" standard was introduced this year. This standard regards "maximum design total mass + engine displacement" as the evaluation system for vehicle fuel consumption limit standards. In accordance with the different uses of vehicles and fuels, limit values ​​for gasoline passenger cars, trucks, diesel passenger cars and trucks are respectively set. The “Limit of Fuel Consumption for Light Commercial Vehicles†will control the energy consumption from the source and guide the product development and technical progress of commercial vehicle companies. At present, many light trucks that cannot meet the National III emission standards face the risk of forced delisting.
Technology competition becomes the main method
Since 1999, the three fluctuations in China's light-card market have been closely related to the cyclical fluctuations in the national economy.
In the past seven years, JAC’s market share has increased by 10%, NAC has fallen by 10%, Foton has fallen by nearly 10%, Jinbei has been revived, and JMC has grown steadily. After years of price war, the profit of light trucks has been very low. All manufacturers gradually tend to be rational in their price competition strategy.
At present, all major light truck manufacturers are vigorously using market competition means of technological competition, and their technological reserves have been gradually released, and product upgrades have been accelerated. The development of models to wide bodies and high tonnages has led to the trend of carding in light trucks. As the China Card market gradually shrinks, these large light trucks may gradually occupy the market originally belonged to China Card.
At present, the light truck has a certain improvement in the cab space, power performance and other aspects, and the carrying capacity is also stronger. The maximum design speed and engine power of the major light trucks marketed by mainstream light truck companies have increased significantly in recent years. Some light truck tonnage has reached 5 tons to 6 tons. If Dongfeng Dolika is equipped with a Yuchai 100kW engine, its high-speed driving capability has been greatly improved. The large Olympic Bell MRT has a wheelbase of 5200mm and a body width of nearly 2000mm. The 6750mm long cargo container can be shoulder-to-shoulder with the China Card in the 4-ton light truck. The maximum power of the engine has reached 100kW, and the maximum speed is 110km at full load, which is about 25% higher than traditional light trucks. In particular, the optimized design of the chassis is more durable and its high-speed and heavy-load capability can be upgraded again.
JAC launched a new generation of light Karei Ling, using JAC's own research and development of the Hult 808 driver's cab and 4DA1-1 series of engines, in the original mature chassis platform has been optimized design and research and development, improve product stability and match the rationality.
Various new light trucks launched by FAW Harbin have been optimized and upgraded in the cab, frame, chassis, and transmissions. Its 2 ton enhanced light truck uses the CA4D32-10 engine produced by DynaCham. The cab is widened by 110mm and the cargo area is increased by 12%. The frame is widened by 70mm, which effectively improves the bearing capacity.
High-end light trucks manufactured using Isuzu's mature technology — Jiangling Kaiyun and Qingling increasingly tend to be high-speed and heavy-duty. Nankai Iveco's high-end light trucks also tend to have a wide cab, long body, high power, high speed and high load capacity.
Light truck consumption upgrade
According to the characteristics of China's light truck market for about 4 years, it is expected that the next peak period of the light truck market will occur between 2008 and 2012. The continuous increase in the total market will result in a light truck market of over one million units.
The light truck market started a new round of consumption upgrades. The light truck products have shifted from homogenization to differentiation, and have gradually achieved scale and specialization. Light-duty trucks have expanded their scope of use and diversified their functions. Such as the development and transformation of special vehicles, vans, dump trucks. It is expected that these differentiated models will soon become the focus of many light vehicle manufacturers.
The toll-by-weight and the implementation of the National III emission standards have stimulated the transformation of light-duty trucks from low-end economy to high-end models with large tonnages, powerful power, and high-speed heavy loads. The share of China Cards in the secondary and tertiary markets will gradually be replaced by high-tonnage light trucks that are configured to be high and more fuel-efficient.
When repairing viscose, to avoid applying glue on a large area, you only need to divide the door frame into four equal parts, and point five points. The two ends and the middle must be glued, and then installed Go back and hold it for a few minutes, and after letting go, the door frame edge will not fall off.
Different glues have different effects, and you should choose and use them according to the material and specific conditions of the door frame edge.
The most convenient way is to use instant glue. After the glue is applied, it can stick together immediately, and the effect is relatively good. The effect is very good for metal and plastic parts. But this kind of glue is easier to paint, and it is easy to have white edges around it after a long time.
The filling effect of slow-drying glue is good, and it will not cause white fog, and at the same time, it will not appear embrittlement. The longer it is used, the better the adhesion will be, but the drying will be slower.
In the case of sticking wooden doors, you can use nail-free glue. Before using, clean the surface to ensure that the surface is free of oil and dust, and then use a sealing gun to squeeze out the glue.
