Kenner's new bit helps wind power manufacturing better
However, some analysts pointed out that due to the rapid increase in wind power investment, the world's wind turbines are in short supply, which in turn increases the price of wind turbines at home and abroad, increases the cost of wind power investment, and affects investment income. This phenomenon requires Chinese companies to produce wind turbines that meet the needs and are more affordable.
This requires the joint efforts of Chinese wind power equipment manufacturers and related equipment suppliers.
According to the technical manager of Kenner Metal's China sales department, KSEMPLUSTM consists of a steel drill body and a high-strength solid carbide SE drill tip. Its drill body has a central inner cooling hole that maintains rigidity while allowing maximum flow of coolant through the tool. The SE drill tip and the spiral groove of the blade are slightly separated, making the chip removal smoother and more rigid. Its land and back angle eliminate chip friction between the drill body and the hole wall, increasing the life of the drill body and improving the surface quality of the hole. A KSEMPLUSTM drill body covers a range of drill sizes in a range of diameters. This tool is suitable for hole machining of steel, stainless steel, cast iron and non-ferrous alloy workpieces.
According to the author's analysis, compared with the drill bit that the user has already used, the advantage of KESMPLUSTM lies in the center of the SE solid carbide tip. The SE drill tip is very special. It changes the defect that most of the cutting angle of the drill varies greatly with the position of the cutting edge. There is a cutting angle on the entire cutting edge that is suitable for the cutting of the position. Therefore, since the SE drill was invented, it has been the leader in solid carbide drills. In the process of designing KSEMPLUSTM drill bit, Kenner Metal changed the middle drill bit from the original twist drill or center drill and center drill to SE drill tip. It is true that the cutting performance of the original KSEM modular drill bit will be improved. very effective. Secondly, the diameter of the SE drill tip used by KSEMPLUSTM is larger than the diameter of the drilling unit in the middle of other modular drill bits, so that the strength of the center drilling unit is increased, and the indexable insert can be avoided. The joining method forms a cutting edge, and the two cutting edges are formed by two perfectly symmetrical inserts, thereby doubling the number of cutting edges compared to many other products. In this way, KSEMPLUSTM's cutting ability has been greatly improved, both in the center of the drill bit and in the outer circle of the drill bit, and it is not surprising that the machining efficiency can be doubled.
The manufacturer of the slewing ring decided to provide an opportunity to see if Kennametal's KSEMPLUSTM drills were as magical as they were, because the KSEMPLUSTM drills were about 30% higher than their original German products, while the center The 16mm SE drill tip for cutting is 10 times more expensive than the original 5mm centering drill!
Kennametal's engineer made some adjustments to the cutting parameters according to the KSEMPLUSTM product and the characteristics of the user's machine tool and workpiece. The cutting speed was slightly lower than the original (from 146m/min to 136m/min), but The increase in feed rate is large (from 0.086mm/r to 0.2mm/r), and the feed rate during final processing is more than doubled (from 120mm/min to 260mm/min). As a result, the processing cost of the machine tool has dropped by 54%, and the annual income can reach about 88,000 yuan.
Surprisingly, the tool consumption has not increased with more than double the cutting efficiency. The life of the tool has increased by a factor of about four (from the original 81 holes to the current 324 holes, which is the result of a weighted conversion of the life of the solid carbide tip and the carbide insert), so although the KSEMPLUSTM tool itself The higher the price, the user can still create a profit of 48,000 yuan. Coupled with the time cost of reducing the number of blade replacements and the reduction in labor costs due to increased efficiency, KSEMPLUSTM drills can bring nearly RMB 140,000 to the company with an annual output of 3,600 slewing bearings.
In addition, according to the engineer of Kennametal, the current drilling process of this customer is more stable than before: the phenomenon of the central drill bit breaking has disappeared; the state of the chip is more than before. Ideal: the original chips are spirally entangled, often entangled on the drill bit, so that the operator has to stop to clean the chips, affecting the processing efficiency, and now it is 1 to 2 turns of short spiral shavings, very easy to clean; The surface quality of the drilled hole is improved: the value of the roughness is reduced by half, that is, the level is increased by one level, and the customer satisfaction is also improved.
According to the author, because of the improved drilling quality, the KSEMPLUSTM drill can be drilled 0.1mm smaller than the original diameter, although both are within the allowable range. Perhaps this 0.1mm seems so insignificant, but the increase in this physical material has a little benefit in improving the strength of the entire part. In management, we often say that the details determine success or failure. This small change will play a good role in wind power equipment that operates in harsh environments for a long time.
From the above story, we can see that for the manufacture of wind power equipment, a good knife has the potential to improve the processing efficiency, reduce the processing cost, and improve the quality of processing and the stability of processing quality. Such a tool is definitely more than KSEMPULS? But such a tool will definitely help the wind power industry to develop faster and better.
A case that I have seen recently shows that tool companies should become and be part of the booster for the development of China's wind power industry. Among the factors that determine the manufacturing efficiency, manufacturing cost and manufacturing quality of wind power equipment, the tool is definitely a small but extremely important part.
There is a well-known enterprise in China that processes slewing bearings for wind turbines. In the slewing bearing provided for the fan, a blade support for connecting the blades and the head and other supports on the fan need to be drilled many times. Hole so that the bolt can pass smoothly when it is installed again. This company used to use a drill bit from a German company known for its hole-cutting tools. In the middle of the drill is a standard centering drill with an inner blade and an outer blade lapped into a complete cutting edge to create a complete cutting function from the center to the outer circle. Moreover, the head of the drill has two support blocks to improve the centering ability and stability during drilling.
1. Material: SS316L, 304, 301, 202, 201.
2. Thickness: 0.1mm-2.0mm.Width: 5mm-420mm, Tolerance: 0.02mm
3. Mechanical properties:
A) Tensile strength: 520min - 1570 Mpa
B) Yield strength: 205min – 1275min Mpa
C) Elongation: 3min – 40min Mpa
D) Hardness: 200max – 490min HV (ANN- EH)
4. Standard: GB. Surface treatment: 2B.
5. Qty (MOQ): 5 Tons. Weight per coil: 0.5ton-3ton.
6. Package: braided bag, woven bag or as per the requirement of the customer.
7. Payment term: TT (30%TT in advance, 70% paid before delivery.)
8. Delivery time: we can produce 20tons coils every day.
9. Application:electron, information, spaceflight, energy resources, traffic, chemical industry, tactile, medical appliances, meter, electrical appliance, dishware, adornment and constructional engineering, etc.
Zhejiang Zhengkang Industrial Co., Ltd., founded in 1999, is situated in National Economic Development Zone, Wenzhou Binhai Garden. The company covers an area of 6.6 acres and has a total investment more than 50 million USD with an output value amounting to 80 million USD. As a professional manufacturer, Zhengkang specializes in manufacturing and selling thin-walled stainless steel tubes and fittings, thin-walled carbon steel tubes and fittings, fit tools, stainless steel strips and valves, etc.
Zhengkang has manufactured and developed national I series and national II series (same with DVGW and JIS standards) Pipes, M Profile and Press Fittings V Profile, Bulging(Casting) Fittings and Groove Fittings, including varieties of thin-walled metallic pipeline joints. We have taken out many national invention patents on the bulging joint stainless steel pipelines, better than Tectite system. We can manufacture over 8000 tons of thin-walled stainless steel pipes, stainless steel fittings and carbon steel fittings per year and 10000 tons of stainless steel coils.
Our products are widely used in middle or large scale construction projects, such as drinking water, cold and hot water, tap water, and gas-supply systems in the National Stadium(Nest for Beijing Olympic Games) and Crown of East(Shanghai Expo), and the Asian Games Village, etc. Our sales network spreads all over the hub cities at home and also can be found abroad, promising a wonderful foreground.
We stick to all-embracing service and the best quality and strive for creating higher quality and environmentally friendly tubes, keeping improving and innovating. We will make great efforts to set up an international metallic pipeline brand.
We warmly welcome every customer at home and abroad to our factory to do win-win beneficiary business and achieve our mutually benefit.
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