Speaking of the tragedy again, a serious accident occurred in the early morning of the Yangtze River estuary in Shanghai, China, where two ships collided. An oil tanker collided with a gravel cargo ship, causing the oil tanker to catch fire, the gravel ship sank, and 14 people were missing. The search and rescue operations are still ongoing. get on. As soon as the news comes out, all we can do is to find the missing crew member as soon as possible. As for the cause of the accident, it may be related to the smuggling of sand and gravel by inland river vessels.
We have summarized many accidents, but accidents will still happen. Can we prevent them in advance in this environment? Can the accident be avoided again?
In fact, every ship has an AIS system, which can record the basic situation of the ship’s sailing and suspension, and can also effectively prevent some emergencies. And what does the collision of the Yangtze River Estuary show? Why is it not effectively avoided?
The condition of the waterway on the water is quite special. With these many unexpected situations, the ASI system can indeed effectively avoid certain situations, but there are things that cannot be done. Such as near the port channel, some black ships, seizing the channel, sailing at night, sailing out in heavy fog, etc. In this case, CCTV video surveillance is necessary to supplement ASI's system deficiencies.
In particular, the ship-borne gimbal thermal imaging camera can play a role. When the human eye can’t distinguish, use laser thermal imaging to observe whether there are obstacles, whether there are black ships, and whether there is such a rush Events can be screened through this system. Further ensure the safety of vessel navigation. To a certain extent, the recurrence of tragedy can be avoided.
Pyrite as Fillers Used in Grinding Wheels/ Abrasive Tools
Ablation grinding wheel / abrasive( filling agent )
PYRITE__As fillers used in grinding wheels/ abrasive tools
Place of Origin: Henan Luoyang, China
Pyrite, Iron pyrites, pyrites lump, Ferro sulphur, Pyrites powder.
Product Description
Detailed introduction: is filling agent for ablating grinding wheel abrasive, which can effectively reduce the grinding wheel temperature during ablation, improve the heat resistance, and prolong the service life of the grinding wheel.
Formation of a protective layer
(1)The reaction absorbing oxygen occurs between 400 and 475 degrees, thereby reducing the oxidation of resin, reducing the oxidation burn of workpieces, and prolonging the working life of grinding wheels at high temperature.
4 FeS2 + 11 O2→2 Fe2O3 + 8 SO2
(2) 4 FeS + 7 O2→4 Fe2O3 + 4 SO2
400-475 degrees is a limit that the grinding wheel can easily reach. The above reaction creates an oxygen-free and hypoxic environment for the grinding wheel at the micro level, thereby improving the high-temperature performance of the grinding wheel.
Decomposition reaction occurs at 650-degree heat absorption, thereby reducing the working temperature of the grinding wheels.
FeS2→FeS + S
(3) It enters the melting state at about 1100 degrees, which becomes a good lubricant to protect the grinding wheel FeS(s)→FeS(l).
(4)Sulfur, sulfur dioxide and sulfur trioxide react with the workpiece surface to form FexSy:
Quality:
S: 48%min, FE: 42%min, SIO2: 3.0%max, PB: 0.1%max,
ZN: 0.1%max, AS: 0.1%max, . C: 0.3%max, CU: 0.2%max,
H20: 1.0%max, SIZE: 95%min
Granularity: (0-3)mm/(3-8)mm/(3-15)mm/(15-50)mm or other particle size.
Packing: 25KG/500KG/1000KG/BAG or 1000KG/BAG or other packaging.
Note: if there are special requirements, the product can be customized according to clients` requirements.
Iron Sulphide For Resin Grinding Wheel---LHT(SL)
Iron sulphide for resin grinding wheel Pyrite, Iron pyrites, pyrites lump, Ferro sulphur, Pyrites powder
LUOYANG PERFECT TRADING CO.LTD, , https://www.pyritefes.com