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"Golden Nine Silver Ten" Major Project Construction Busy Central Enterprises Orders

Release time:

2023-11-10 16:47

 

During the Mid-Autumn Festival, at the construction site of the Xuxin Expressway Project of the China Construction Seventh Bureau General Contracting Company in Linying County, Luohe City, Henan Province, workers are working in an intense and orderly manner, showing a hot construction scene. "At present, it is the golden period of construction. In order to finish the task of completion and acceptance next year on time, everyone is rushing to work." Template worker Wang Haoran said.

In the "Golden Nine and Silver Ten" construction peak season, the construction of major projects in many places is in full swing, multi-channel funds are accelerated, and many construction central enterprises have full orders. Industry insiders believe that the current infrastructure projects have reserves, financial support is guaranteed, the project landing situation is expected to improve. With the accelerated introduction of stable economic succession policies, the growth rate of infrastructure investment is expected to remain high this year.

  Major project construction in full swing 

Recently, the construction of major projects in many places is in full swing.

In Ningxia, on September 9, the country's largest desert photovoltaic base-Tengger Desert 3GW new energy base photovoltaic composite project held a groundbreaking ceremony. As a key supporting project of the "Ningdian into Hunan" project, the total installed capacity of the project is 3 million kilowatts and the total investment is 15.25 billion yuan. In Hainan, on September 9, Haikou City held the third batch of major projects in 2022, with 30 projects with a total investment of 17.39 billion yuan, with a planned investment of 3.05 billion yuan this year. In Shandong and Weihai City, the third quarter industrial project concentrated start-up activities were held. On September 9th, 17 projects including Fengrun Machinery and Jinda RV in Lingang District started simultaneously, with a total investment of 2.33 billion yuan, covering high-end equipment manufacturing, new materials, and biomedicine. And other fields. In Anhui, on September 8, Bowang District of Maanshan City held a centralized commencement ceremony for key projects of "Bowang decade". This time, 19 key projects were started, with a total investment of 10.36 billion yuan.

In addition, Hangzhou, Nanchang, Tangshan, Shanghai, Xi'an and other places have recently announced the launch of a number of major projects, seizing the golden period of construction, and going all out to rush to work. According to the statistics of infrastructure communication big data, from August 16 to August 31, 28 major infrastructure projects were started nationwide, with a total investment of 386.2 billion yuan, including roads, subways, water conservancy, urban development, industrial parks, etc., of which 4 The total investment of the project exceeds 40 billion yuan.

Cai Yanfen, a senior analyst at Centennial Construction Network, said that with the gradual fading of the high temperature weather, the previous passive shortening of the project duration returned to normal, and the rush of key livelihood projects around the country to complete the schedule on time, especially the municipal projects have started one after another, boosting the demand for infrastructure. In addition, after the high temperature subsided, the progress of projects under construction was accelerated compared with the previous period.

"The rush of infrastructure projects is expected to drive the industry boom, and the traditional construction season of 'Golden Nine and Silver Ten' is expected to show a more prosperous peak season." Ren Feifei, chief analyst of construction and building materials at Cinda Securities, believes that the stable investment policy continues to be strengthened, and all localities actively promote the construction of large projects such as "two new and one heavy", and the number of new projects and planned total investment have maintained rapid growth.

  Multi-channel funds to accelerate the delivery 

Multi-channel funds are accelerating the investment, rushing to aid the construction of major projects.

On the one hand, the policy-oriented development financial instruments known as "quasi-finance" have continued to expand, and the capital of major projects has been further guaranteed. The executive meeting of the State Council held on August 24 made it clear that on the basis of 300 billion yuan of policy-based development financial instruments that have fallen into the project, the amount of more than 300 billion yuan will be increased. Liu Guoqiang, vice president of the people's Bank of China, said recently that the first batch of 300 billion yuan operating financial instruments set up by the people's Bank of China to support the China Development Bank and the Agricultural Development Bank to supplement the capital of major projects were put into operation on August 26, supporting more than 900 major projects.

The expansion of the quota has been accompanied by a further expansion of the scope of support for policy-based development financial instruments. The executive meeting of the State Council held on August 31 proposed that the transformation of old residential areas and provincial expressways should be included in the support areas of policy-oriented development financial instruments; new projects started in the first half of the year should be included in the scope of support, and projects that previously met the conditions but were not put in due to quota restrictions will be automatically included in support, so as to form more physical workload in the third quarter.

On the other hand, the direction of special debt fund support is clear. The executive meeting of the State Council held on September 7 pointed out that, in accordance with the law, the local balance of more than 500 billion yuan of special debt limit since 2019, 70% of the local retention, 30% of the central financial co-ordination allocation and to mature projects in the region. All localities should complete the issuance by the end of October, give priority to supporting projects under construction, and form more physical workload during the year.

Regarding the key investment of the more than 500 billion yuan special debt limit, Assistant Minister of Finance Owen Han said recently that the more than 500 billion yuan special debt balance limit will focus on supporting transportation infrastructure, energy, agriculture, forestry and water conservancy, ecological and environmental protection, social undertakings, urban and rural cold chain and other logistics infrastructure., Municipal and industrial park infrastructure, major national strategic projects, affordable housing projects, and the construction of new energy projects and new infrastructure projects.

"Two incremental initiatives, increasing the amount of policy-oriented development financial instruments and making good use of the special debt balance limit in accordance with the law, may bridge the $1 trillion funding gap and push major projects to start construction on the ground." Gao Ruidong, chief macro economist at Everbright Securities, said that under the effect of the above-mentioned incremental measures, it is expected that the momentum of broad fiscal expansion will be maintained until the fourth quarter, supporting the growth rate of infrastructure investment to maintain a high level.

  Infrastructure investment growth expected to remain high 

In the context of stable investment plus code, the infrastructure class of central enterprises orders full.

According to the latest report released by Guosheng Securities, in the first half of the year, the five major construction central enterprises (China Construction, China Railway, China Railway Construction, China Communications Construction, China Power Construction) signed new infrastructure contracts worth 3.9 trillion billion yuan, an increase of 26.4 percent over the same period last year, with an average growth rate of 23.2 percent in three years, much higher than the overall growth rate of infrastructure investment, indicating that orders are relatively abundant.

Adequate orders help improve industry performance. Yuan Hao, a researcher at Shenvan Hongyuan Securities, said that the steady growth policy continues to be launched, infrastructure projects are expected to accelerate the landing, superimposed on the enterprise itself to strengthen internal control, the quality of operation continues to improve, this year's construction industry revenue, performance will have a better performance. Su Duoyong, an analyst at Anxin Securities, believes that orders from central infrastructure enterprises and leading local infrastructure enterprises are growing rapidly, and the release of full-year results is worth looking forward. The construction industry's full-year revenue and performance are expected to maintain rapid growth.

Xiong Yuan, chief economist of Guosheng Securities, said that at present, infrastructure projects have reserves, financial support is guaranteed, the landing of projects is expected to improve, and the growth rate of infrastructure investment in the second half of the year is expected to remain high or even hit a new high. It is expected that the growth rate of full-caliber infrastructure investment will exceed 10% this year.

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Under the background of high-quality development, how will the road and bridge industry develop?

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2023-10-17

Analysis and Solution Summary of Common Faults of Smearing Machine

1. Smoke from the smoothing machine when working Check the trowel machine to check whether there is too much oil. If there is too much oil, release part of it. It can also be that the piston is broken and severely worn and will burn the oil. If it is damaged, it needs to be replaced in time. Check the engine. If the engine is not faulty, it may also be that there are too many impurities in the oil. The oil is very important. Try to choose high-quality oil. When buying, you must pay attention to prevent buying inferior fake oil. 2. How to level the chassis screws of the smoothing machine First replace 4 new blades and put the trowel in a particularly flat place. Then remove the shift fork and visually inspect whether the heights of the four screws are consistent. If conditions permit, measure them with a ruler. If the heights are inconsistent, adjust them to be consistent. When the gland is gently shaken, if there is no shaking, the debugging is proved successful. Put some butter on the top of the screw to prevent wear. 3. The wiping machine always stalls Observe whether the oil level is normal and whether the oil is too little. Some machines have their own oil protection system, which will automatically turn off when there is a shortage of oil. There is also the fact that after the remote flameout switch and the flameout switch of the machine are disconnected one by one, if the flameout phenomenon does not occur again, it means that there is grounding in that part. Just check and eliminate it carefully. 4. The engine of the trowel is normal, but the trowel is not moved. If there is no problem with the engine, it is caused by the wrong belt type or the belt is too long. If there is still an abnormality, it can be handled by changing a clutch. 5. The gasoline polish machine was blistered First clean the carburetor, let the spark plug be removed to see if there is water in the cylinder head. If there is water, pull the disk several times to drain the water. Try again after changing the oil to see if it is normal. 6. The smoothing machine cannot rotate Reason: The blade may be deformed; the motor bearing is broken; the motor bracket is not fixed well; there is a problem in use.


2023-10-16

Method of polishing and grinding

Method of polishing grinding: Grinding is the grinding tool (hereinafter referred to as the grinding tool) surface embedded abrasive or coated abrasive and add lubricant, under certain pressure, the tool and the grinding tool contact and do relative movement, through the abrasive action, from the workpiece surface cut a layer of very thin chip, so that the workpiece has a precise size, accurate geometry and high surface roughness. Its essence is to use free abrasive particles to carry out micro-cutting including physical and chemical comprehensive effects on the surface of the workpiece through the grinding tool. Features:(1) In mechanical grinding, the machine tool-tool-workpiece system is in an elastic floating state. (2) The workpiece to be ground is not subject to any force and is therefore in a free state. (3) The speed of the grinding movement is usually below 30 m/min, which is about 1% of the grinding speed. (4) When grinding, only a very thin layer of material can be cut off, so the heat generated is less, the processing deformation is small, and the surface deterioration layer is also thin. (5) There is residual compressive stress on the grinding surface, which is beneficial to improve the fatigue strength of the workpiece surface. (6) The operation is simple and generally does not require complicated and expensive equipment. (7) Adaptability is good. (8) grinding can obtain very low surface roughness. 1. Fluid polishing Fluid polishing is to rely on high-speed flow of liquid and abrasive particles to wash the surface of the workpiece to achieve the purpose of polishing. Commonly used methods are: abrasive jet processing, liquid jet processing, fluid power grinding. Fluid power grinding is driven by hydraulic pressure, The liquid medium carrying the abrasive particles is caused to flow back and forth at high speed over the surface of the workpiece. The medium mainly uses special compounds with good flowability at lower pressure. (polymer-like substance) and mixed with abrasive, abrasive can be used silicon carbide powder. 2. Mechanical polishing Mechanical polishing is a method of polishing a smooth surface by cutting and plastic deformation of the surface of the material to remove the convex part after polishing, Generally use oilstone, wool wheel, sandpaper, etc., mainly manual operation, special parts such as the surface of the rotary body, Auxiliary tools such as turntables can be used, and the method of super-lapping can be used for high surface quality requirements. Super lapping is a special abrasive tool, In the polishing liquid containing abrasives, it is tightly pressed on the surface of the workpiece to be processed for high-speed rotating motion. Using this technology, the surface roughness of Ra0.008 μm can be achieved, which is the highest among various polishing methods. Optical lens molds often use this method. 3. Ultrasonic polishing The workpiece is placed in the abrasive suspension and placed together in the ultrasonic field, relying on the oscillation of the ultrasonic, The abrasive is ground and polished on the surface of the workpiece. Ultrasonic machining macro force is small, will not cause deformation of the workpiece, but tooling production and installation is difficult. Ultrasonic machining can be combined with chemical or electrochemical methods. On the basis of solution corrosion and electrolysis, ultrasonic vibration is applied to stir the solution, The dissolution products on the surface of the workpiece are separated, and the corrosion or electrolyte near the surface is uniform; Ultrasonic cavitation in the liquid can also inhibit the corrosion process, conducive to surface brightening. 4. Electrolytic polishing The basic principle of electrolytic polishing is the same as chemical polishing, that is, by selectively dissolving the small protruding parts of the surface of the material, Make the surface smooth. Compared with chemical polishing, the effect of cathode reaction can be eliminated, and the effect is better. The electrochemical polishing process is divided into two steps: (1) Macroscopic leveling dissolution products diffuse into the electrolyte, and the geometric roughness of the material surface decreases, Ra> 1μm. (2) micro light level anode polarization, surface brightness, Ra <1μm. 5. Fluid polishing Fluid polishing is to rely on high-speed flow of liquid and abrasive particles to wash the surface of the workpiece to achieve the purpose of polishing. Commonly used methods are: abrasive jet processing, liquid jet processing, fluid power grinding. Fluid power grinding is driven by hydraulic pressure, The liquid medium carrying the abrasive particles is caused to flow back and forth at high speed over the surface of the workpiece. The medium is mainly made of special compounds (polymer-like substances) with good flowability at lower pressure and mixed with abrasives, The abrasive may use silicon carbide powder. 6. Chemical polishing Chemical polishing is to make the surface of the material in the chemical medium micro convex part of the concave part of the preferential dissolution, A smooth surface is thus obtained. The main advantage of this method is that it does not require complex equipment and can polish workpieces with complex shapes, Many workpieces can be polished at the same time with high efficiency. The core problem of chemical polishing is the preparation of polishing solution. Surface roughness obtained by chemical polishing Generally, it is several 10 μm. 7. Magnetic grinding and polishing Magnetic grinding and polishing is the use of magnetic abrasive under the action of a magnetic field to form an abrasive brush to grind the workpiece. This method has high processing efficiency, Good quality, easy control of processing conditions, good working conditions. With suitable abrasives, the surface roughness can reach Ra0.1 μm. The polishing in plastic mold processing is very different from the surface polishing required in other industries, Strictly speaking, the polishing of the mold should be called mirror processing. It not only has the very high request to the polishing itself but also to the surface flatness, There are also high standards for smoothness and geometric accuracy. Surface polishing is generally only required to obtain a bright surface. The standard of mirror processing is divided into four levels: AO = Ra0.008μm, A1 = Ra0.016μm, A3 = Ra0.032μm, A4 = Ra0.063 μm, due to electrolytic polishing, fluid polishing and other methods are difficult to accurately control the geometric accuracy of the part, The surface quality of chemical polishing, ultrasonic polishing, magnetic grinding polishing and other methods can not meet the requirements, so the mirror processing of precision molds Or mainly mechanical polishing.


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What does the floor grinder floor grinder inverter display oL2 mean? Why can't the machine start? How to solve?

The situation is as follows: 1. The ground is very uneven, the resistance of the grinding disc is large, and the motor load is too heavy. 2. If this situation occurs when the new machine is used for the first time, it means that the governor has been adjusted to the fastest speed position, or the new grinding plate (block) Not open rough pressure on the rough hard surface, resulting in a large disc resistance, motor load is too heavy. 3. If the gearbox is repaired and the machine is initially tested like this, it may be that the gear assembly is not smooth and too tight, causing the grinding disc to rotate manually. It is not smooth, or the motor shaft and the center gear are not concentric after the motor is fixed during assembly, that is, the rotation is not concentric, which makes the electricity The rotation of the rotor is blocked and Caton occurs. Corresponding solution: 1, the machine up, move to a relatively flat ground area grinding, and then slowly cut into the uneven ground area, or use Other small grinding disc machinery will ground the rough surface of the potholes slightly smooth, and then use the machine to grind. 2. Roughen the grinding piece (block) on the cement floor. Press down on the armrest and raise the starter of the machine (make the grinding disc slightly off the ground). The machine (grinding disc) can be slowly landed. 3. Reassemble the gear or reassemble the motor to make the gear and the grinding disc rotate smoothly. After inserting the motor shaft into the central gear Concentric, suspend the motor and the box and energize the motor to start the motor, so that the motor, gear and grinding disc rotate smoothly. After shutdown, hand Rotate the grinding disc smoothly.


2023-10-09