Gesundheit » sharp. Effect of grinding fluid on surface rou

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by Li Jizhi Adidas Ultra Boost 3.0 Homme Noir Pas Cher , Zhang Xuan


HELSINKI, Oct. 2 (Xinhua) -- Mushroom-picking has long been a tradition in Finland, where 70 percent of the Nordic country is covered by forests.


In the rainy Autumn when funguses thrive, Finnish nature lovers will throng into the woods for fun. It is said that 30 percent of Finns often go to pick up mushrooms.


Kaisa is a young lawyer in Kouvola, some 120 kilometers east of Helsinki. Her parents live in the nearby countryside and they own a large piece of land Adidas Ultra Boost Femme Rose Pas Cher , consisting of a 50-hectare farm and a 50-hectare wood.


In her time off work, Kaisa and her parents went to pick mushrooms, bring with them a special instrument - a knife with a brush at the end of the handle. The blade is used for cutting, and the brush to wipe off dust and worms.


They would examine closely before starting picking in order to determine whether the objects were edible or not.


Some mushrooms were bitten by insects, but the remaining part could still be taken home. Among the edible species Adidas Ultra Boost Femme Rose Grise Pas Cher , the yellow-colored Chanterelle and the barrel-shaped Bolete are the most popular.


Trumpete chantarelle mushrooms are humble looking, but very delicious. They usually flourish in late September when the weather turns cold.


Back at home, Kaisa said the mushrooms should be immediately cleaned. Otherwise, they should be kept in the refrigerator so as to curb the mild toxicant.


Kaisa's mother Mirja was a master of cooking. She was extremely good at making mushroom cuisine.


She quickly cleaned the harvest and divided them into two groups: one was fried in a pan to make gravy; and the other was boiled to make mushroom sauce and salad.


Finland produces thousands of species of mushrooms, and edibility of most species have not been identified. About 150 types of mushrooms have been considered edible Adidas ACE 16+ PureControl Ultra Boost Homme Blanche Pas Cher , and some 20 are confirmed to be poisonous.


In the past 40 years, 20 deadly cases were reported in Finland.


The mushroom sauce and salad were tasty and refreshing. It would be even delicious to go with stewed potato and rye bread. Kaisa's family were never worried about the lack of vegetables in house, because they could always go to the field picking up mushrooms and berries.


According to the Finnish law, anyone can walk into everyone else's forest picking mushrooms, berries Adidas Ultra Boost Homme Bleu Pas Cher , as well as fishing and having picnic, without disturbing the landowner's life.

" Commonly used [url= ]5 inch resin cutting disc for metal[url] are white corundum and green silicon carbide. Experiments show that the effect of the two abrasives on the adhesion rate is not much different. Green silicon carbide can slightly reduce the adhesion phenomenon, which is fragile and sharp.
Effect of grinding fluid on surface roughness
Three kinds of emulsions, inorganic salt grinding fluid and oil-based grinding fluid, and extreme pressure additives such as sulfur and chlorine were added to observe the surface roughness of the workpiece after processing. The flow rate of the grinding fluid was 20 Lmin. It is 600mm.
It can be seen that the surface tension is small and contains extreme pressure additives Adidas Ultra Boost Parley Homme Bleu Blanche Pas Cher , and the surface quality obtained by grinding is good. Reasonable use of the grinding fluid can improve the heat dissipation condition. The grinding fluid can wash away the grinding debris and the falling abrasive grains, and at the same time form an oil film on the metal surface to provide lubrication and reduce the surface roughness of the workpiece.
Effect of grinding amount on adhesion rate
The workpiece rotation speed, feed rate and grinding depth have little effect on the machining, and the change of the grinding depth has little effect on the adhesion rate.
in conclusion
1) When grinding stainless steel, reducing the adhesion and blocking of the [url= ]125*1*22 EN12413 cutting disc[url] is an important factor to improve the grinding efficiency. The cutting piece should be trimmed frequently during processing to keep the cutting edge sharp.
2) Grinding stainless steel cutting piece is the main target of using self-sharpening cutting piece. Generally Adidas Ultra Boost Homme Verte Noir Pas Cher , the cutting piece with low hardness is good, but the hardness is too low, otherwise the abrasive grain will fall off without being blunt. It is recommended to use J grade.
3) In order to reduce the adhesion blockage of the cutting piece during grinding, a coarse-grained cutting piece should be used. For coarse grinding, the size of No. 36 and No. 46 is used Adidas Ultra Boost Homme Marine Blanche Pas Cher , and for fine grinding, the size of No. 60 is used.
4) When grinding stainless steel, the use of GC cutting sheets can improve the grinding efficiency.
5) Grinding fluid must be used in both lubrication and cleaning. The supply is sufficient. The emulsion with extreme surface tension and extreme pressure additives can be used to obtain high surface quality.
6) The choice of grinding amount can be determined according to the machining allowance.
7) During the experiment, it was found that the structure and bonding agent of the [url= ]cutting disc for stainless steel[url] have a certain influence on the grinding process of stainless steel, which is currently limited by experimental means and needs further study.

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