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China Diamond Saw Blade Industry Starts "American Breakthrough"

As Chinese companies become more and more deeply integrated into the international economic arena, various international economic frictions and disputes have also increased. Although the American Diamond Saw Blade Manufacturers Association has submitted anti-dumping applications for diamond circular saws and components from China and South Korea to the U.S. government to date, intermediaries such as the Shanghai Stone Industry Association and other intermediary organizations have organized the Dozens of Chinese companies in Shanghai and Shanghai jointly responded to US anti-dumping pressure, and contacted the China Electromechanical Import and Export Chamber of Commerce, China Stone Industry Association and other relevant organizations to find a breakthrough in the case on the basis of fully studying the US indictment.
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22
2020-06

Alloy blades were industry

时间 : 2020-06--22
A, alloy circular saw blades when many factors in the grinding to be ignored      1. The matrix deformation big, thickness not consistent, inner pore tolerance is big, the matrix congenital defect problems, no matter use that type of equipment, there are grinding error. Matrix deformation of two side Angle large produces deviation, substrate inner hole diameter jump to produces deviation; After inconsistent base thickness of blade Angle and anterior horn are produces deviation, if there are cumulative work too poor quality and precision blades have been affected.      2. Gear grinding machine structure on the grinding of gears influence, alloy circular saw blades gear grinding machine structure and assembly quality lies in the market now about class type: one kind is Germany's vision, which float type by vertical grinding machine, the advantages all adopt hydraulic steplessly movement, all feeding system adopts V type guideway and ball screw work, grinding head or big arm with the feed slow retreat quickly into, recede cutter, clip piece oil cylinder regulation center, a piece flexible reliable, dial the tooth accurate positioning, blades set position center firm automatic aleatoric Angle adjustment, center, reasonable, realize the cooling flush with human-machine interface, grinding accuracy, high pure grinder reasonable design; Second, such as Taiwan is currently horizontal machine, mechanical transmission Japanese existing gear and mechanical clearance coattails "sliding precision is poor, clip piece smoothly, a poor performance piece center adjusting difficulty big, pull teeth institutions or poor reliability, plane after both sides and angles are not in a center around grinding, produce big deviation, Angle difficult to control, abrasion distress ensure accuracy.      3. When soldering alloy welding factors, for moderate deviation is big, influence, grinding accuracy caused side grinding head pressure big, side after pressure small, also produce the above factors, corner soldering Angle is poor, artificial inevitable factors of grinding wheel, such as when the factors arise unavoidable influence.        4. Grinding wheel quality and granularity width influence, choose one hour, pay attention to grinding wheel break-in gold particle, particle size too thick grinding wheel grinding wheel trace, produced chosen fine granularity easily blocked grinding quantity is little, easy to burn knife. Grinding wheel diameter and thickness is according to the width of length of size or not alloy tooth shape and alloy each face up, not a corner after corner like norms or before grinding can be, can be arbitrary grinding different serrate type, must have targeted to choose suitable for specifications grinding wheel.      5. Grinding head into to speed grinding, alloy blades or fully determined in grinding head into relevant to speed, the general alloy circular saw blades into to speed 6 mm/SEC cannot speeding this value, namely every minute should be in 20 teeth every minute, within 20 teeth at the feeding speed is too big, can have serious sarcoma or burn alloy wheel sword produced affect concavo-convex surface grinding gears precision, waste the wheel.        6. Grinding head feeding, choose grinding wheel granularity is extremely important to feed amount significance, general grinding wheel the proposal chooses 180 # to 240 # extremely quantity choose 240 # to 280 #, do not grant to choose 280 # to 320 #, or to adjust the feeding speed.      7. Grinding center, all saw blades for the center with grinding the matrix, not a knife as the center, plane grinding center after take not to come out, the anterior horn horns, with processing center cannot grind a saw blades, grinding three process should not be neglected in blade center. Grinding side Angle was still careful observation of alloy thickness, thickness different grinding center change, no matter how thickness, grinding alloy wheel with flanking centerline should keep welding bits in a straight line, or produce Angle cutting greatly affected.      8. Dial the tooth institutions can not be ignored any gear grinding machine no matter how and, dial the tooth structure design involves coordinate accuracy grinder, made in adjustable unit dial quality of gear tooth surface pressure in the needle, not reasonable position of mobile is also and key and withdrew tooth, dial the tooth claw to be flexible and reliable.        9. Clip piece structure: clip piece structure fatigue solid stable and reliable, and the main parts is sharpening quality, any sharpening your piece structure not any loose, no side grinding of gears deviation serious abuse.        10. Grinding trip, regardless of any part of the grinding sawblade grinding head grinding trip is very important, general requirements than 1 mm grinding work or quit 1 millimeter advisable, or to other tooth influence.        11. Program choices: sharpening general equipment is rough and fine, grinding three
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22
2020-06

Agreement of Non-use Conflict Minerals

时间 : 2020-06--22
warrant that all products and packaging what we are supplying to our customers thereof do not contain conflict minerals from Congo and it’s neighboring countries or any armed-conflict areas within the geographic territories of these countries. Congo and its neighboring countries(hereinafter “Conflict Regions”) comprise: (a) Republique democratique du Congo, The Republic of Congo, The Republic of Sudan, Republic of South Sudan, The Republic of Uganda, Republika y’u Rwanda, The Republic of Burundi, The United Republic of Tanzania, The Republic of Zambia, The Republic of Angola, The Central African Republic; and (b) any current or future country/region that includes a part of all territories of foregoing countries. Conflict Mineralsinclude, but not limited to, rare metals such as tinstone, wolframite, coltan, gold and their derivatives, especially gold (Au), tantalum (Ta), tin (Sn) and tungsten (W), from Conflict Regions. Not containing conflict minerals from Congo and its neighboring countries or any armed-conflict areas with the geographic territories of these countriesmeans that the mining, refining, shaping and any other manufacturing or processing procedure of conflict minerals does not take place in Conflict Regions. 
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