Continuous casting slabs or primary rolling slabs are used as raw materials, heated by a stepping furnace, and dephosphorized by high-pressure water, and then enter the roughing mill. The rough rolling material is cut through the head, tail, and then into the finishing mill, and computer-controlled rolling is carried out. After the final rolling, it will go through laminar cooling (computer-controlled cooling rate) and take-up by the coiler to become a straight hair coil. The head and tail of straight hair curls tend to be tongue-shaped and fish-tailed, with poor thickness and width accuracy, and often have wavy, folded, tower-shaped and other defects on the edges. The coil is heavier and the inner diameter of the Steel Coil is 760mm. (Generally used in the pipe-making industry.) After straightening the hair through the cutting head, tail cutting, trimming and multi-pass straightening and smoothing finishing lines, and then cutting or re-rolling, it becomes: hot rolling Steel plates, flat hot rolled steel coils, slitting tapes and other products. If the hot-rolled finishing coil is pickled to remove scale and coated with oil, it will become a hot-rolled pickled coil.
Carbon Steel Coil,Hrc Hot Rolled Coil,Cold Rolled Coil,Astm Carbon Steel Coil Shandong Guanzhou Iron and Steel Group Co., Ltd , https://www.shansteelsupply.com
[China Agricultural Machinery Industry News] Three years ago, in the shot of Mango Taiwan, Lin Zhiying’s son Kimi pointed to the aerial drone and said: “It has been following us!†This reality show of tens of millions of people watching each time, Let the "big toy" of drones speed up into the eyes of ordinary people. That year, the drone provider of the show was Dajiang, with sales of 800 million yuan.
UAVs still need to survive the technical dilemma from the countryside
In the past three years, this figure is only 3 million. In the past fall of 2016, the CEO of Dajiang said that this year's sales will break through 10 billion.
Simple and rude numbers point to the drone market in China. A forecast of Changjiang Securities even believes that by 2020, China's UAV industry output value will exceed 100 billion yuan.
This is more than a hundred years ago when the two British generals proposed that no one would think about it. The combination of "Technology Progress Entertainment Star Marketing Event" makes the drones become the blue ocean with attractive prospects in the same market as AR, VR and smart cars.
Dajiang is undoubtedly in the drone industry. But to be precise, this needs to add a somewhat long prefix: "on the consumer drone market."
China's practice proves that in the consumer market, drones have a strong enlightenment, and it brings more entertainment and entertainment to the public, that is, "big toys."
Drone large-scale generation of homework
Only in the industrial market, drones are more like a product that has been promoted by technological advancement. It is expected to penetrate into various subdivisions and truly enter the stage of “specialization in the industryâ€.
Industrial-grade drones for traffic inspection, fire safety, urban planning, map mapping, agricultural plant protection... these B2B areas where there is a higher demand for drone technology and performance.
At this level, China is not a frontrunner: Yamaha of Japan launched a drone called Rmax in 1997 for domestic agriculture.
A world wave that host star Neymar scored in the Confederations Cup football game held in Brazil a few years ago, was also recorded by drone aerial photography - as a fan can not see even in FIFA games Perspective.
Right now, BP and Shell are replacing engineers with drones for oil exploration and modeling.
One can even imagine that if Hitchcock was still alive and asked him to remake the air-to-ground pursuit scene of "Northwest North", he would definitely choose a drone instead of a clumsy propeller when turning. aircraft.
According to Chris Anderson, the editor of the former Wired magazine and author of The Maker, "The drone is like a smartphone, just flying."
If we reason about this sentence, we will certainly agree that the longer the long-life drone is, the more popular it is like a mobile phone.
It's hard to imagine that in the industrial field, someone will let a drone that can only fly for half an hour to shoot a football game of at least 90 minutes. In this market, the owner must not belong to the consumer-class drone, even if its producer is the current master of the wind.
Fuel power becomes reality
In the industrial market, no matter which industry the UAV is combined with, the latter's performance requirements (endurance, control Xutong, data transmission, etc.) are self-evident.
For example, as an agricultural plant protection drone that is optimistic on the B2B level and has a prosperous market, it faces many technical problems – each one is enough to hold the throat of the industry.
One of the big injuries is that most of the commercially available plant protection drones are battery-powered, and even if they take off at full load, the battery life is only 10 minutes to 20 minutes. They need to be rotated at any time with multiple batteries, and the life of a single battery is only about 100 hours.