Guide to purchasing outdoor equipment

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1. Apparel: Functional climbing apparel that has recently been suitable for outdoor life dominates. According to the design, there are professional mountaineering, ordinary OUT DOOR, leisure and many other types, according to their own needs.

The temperature in the mountains during the day is relatively high, but at night the temperature will drop sharply, so insulation clothing is an essential product for the four seasons.

Underwear is best prepared with breathable Coolmax fabric underwear. Because people exercise or do other activities, the body often produces sweat and moisture. When the weather is cold, it makes you feel cold and uncomfortable. At high temperatures, sweat is more boring and uncomfortable. As a result, the body sweats, leaving no sweat on the skin surface and clothing. Long-lasting, comfortable, breathable, cool in winter and cool in summer, it feels more relaxed.

2. Mountaineering bags: backpacks can be divided into 20-40L small backpacks, 40-60L medium-sized backpacks, and 60L or more large backpacks. 20-40L small backpack suitable for a sunrise, 40-60L medium-sized backpack suitable for sleeping one night, 60L large backpack suitable for sleeping more than 2 nights need to use the tent. You can also choose according to the amount of luggage you carry.

3. Hat: The person's head is very sensitive to heat, so in summer, wear a hat with a wide breathable function that can prevent direct light, and wear a functional hat that can maintain the temperature in autumn and winter.

4. Headlights and flashlights: Headlights or flashlights are important equipment, but batteries must be removed to avoid corrosion when not in use. A few headlamps are waterproof or even water resistant. The light bulb is not durable and it is best to carry a spare light bulb. Using a light bulb such as halogen, helium, or argon generates heat and is brighter than a vacuum bulb. I. Sunglasses are easily damaged by alpine skiing. In terms of ultraviolet rays, the reflected light of 10,000 feet of snow is more than 50 times above the seashore. The naked eye's reticulated eyes are easily damaged, causing great pain and snow blindness. Sunglasses can be reduced. This damage, but not to be deceived by cloudy weather, because the ultraviolet rays will penetrate the clouds, the harsh light will cause headaches, sunglasses have a filter effect of 95 to 100. When you look in the mirror at the time of purchase, if you can easily see your own eyes it is too bright. If you want to see the true colors, the colors of the lenses should be grey or green. If you want to look carefully in cloudy or foggy weather, it is best to choose yellow lenses.

5. First Aid Kits: First aid medicines can only treat minor illnesses. Complex patients must still be sent to medical units for treatment. We can only handle simple trauma or stabilize the patient's mood as soon as possible to withdraw patients from the mountains. It is best to use a waterproof and strong box to install, generally the best drugs to deal with (1) blisters, (2) sunburn, (3) abrasions, if there is too much bleeding or fractures are best to wait for the doctor to deal with.

6. Sleeping bags: The best choice is lightweight, warm, comfortable and easy to squeeze and can completely cover the head. The temperature of the sleeping bag is provided by the insulating material to provide a closed air to maintain a certain temperature. The temperature of the sleeping bag is based on the insulating material, material Thickness, size, type and manufacturing methods are generally divided into summer, non-snow, and snow. The range of recommended temperature for each manufacturer's sleeping bag is a reference value, usually around 5 to -30°C. .

7. Hiking shoes: When you purchase hiking shoes, you have to choose a larger one than usual, and the heel must have a finger position. When buying, make sure the heel and the shoes are tight, and the hiking shoes and the sole are unsuitable, comfortable or not, and you can't feel pain when kicking the front and heel. BLACK-YAK brand Partner is a very good leather hiking shoes. Due to the use of Italian VIBRAM soles, soles have excellent friction and wear resistance. The diamond shoes are GORE-TEX hiking shoes, which is light and comfortable as the most suitable product for hiking. When climbing a rocky mountain, climbing shoes such as Edge, Blue Mountain and other climbing shoes are used to relax.

8. Watches: When you are outdoors, it is very necessary to keep track of time. Therefore, a good watch is an essential product for adventurers.

9. Swiss Army Knife and Fire: The quality of the Swiss Army Knife can be described in three sentences: "sharp, strong and durable." A number of practical gadgets are assigned to a small tool, which solves people's daily work and life problems. An ordinary Swiss army knife usually has a main knife, a knife, a pair of scissors, a bottle opener, a wood saw, a small screwdriver, a corkscrew, a toothpick, a tweezers and other tools.

SIC

Emery, also known as Silicon Carbide (SiC), is produced by high-temperature smelting of resistance furnaces using quartz sand, petroleum coke (or coal coke), and sawdust (need to add salt when green silicon carbide is produced). Silicon carbide also has a rare mineral, Moissanite, in nature. Silicon carbide is also called Carbon silica. Among the non-oxide high-tech refractory raw materials such as C, N, B, etc., silicon carbide is the most widely used and the most economical one, and it can be called gold grit or refractory sand. At present, China's industrial production of silicon carbide is divided into two types of Black Silicon Carbide and green silicon carbide, are hexagonal crystals, the specific gravity of 3.20 ~ 3.25, the microhardness of 2840 ~ 3320kg/mm2.

Silicon carbide has two common basic varieties of black silicon carbide and green silicon carbide, both of which are α-SiC. 1 Black silicon carbide contains about 95% of SiC. Its toughness is higher than that of green silicon carbide. It is mostly used for processing low tensile strength materials such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals. 2 Green silicon carbide contains more than 97% SiC, self-sharpening, mostly used for processing hard alloys, titanium alloys and optical glass, also used for honing cylinder liners and grinding high-speed steel cutters. In addition, there is cubic silicon carbide, which is a yellow-green crystal made by a special process, used for the production of abrasives for bearing superfinishing, surface roughness can be processed from Ra32 ~ 0.16 microns to Ra0.04 ~ 0.02 micron.

 

Silicon Carbide

Silicon Carbide,Black Silicon Carbide,Silicon Carbide For Abrasives,High Purity Silicon Carbide

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