Hss Titanium
In mold making 25 FAQ – HC Network Machine Tool Industry
1) choose this mold steels are the most important and most decisive factor?
Training method – the basic material of the two types of options.
A) tool steel for hot work that can withstand die casting, forging and extrusion of relatively high temperatures.
B) Cold tool steel, it is used for cutting and shearing, cold forming, cold extrusion, cold and compression molding powder.
Plastics – some plastics are produced by-products corrosive, such as PVC plastic. Long layoff caused by condensation, corrosive gases, acids, air conditioning / heating, water or storage conditions and other factors cause corrosion. In these cases, recommend the use of stainless steel materials steel tools.
Die size – large mold often use pre-hard steel. hardened steel is often used for the mold assembly of small size.
Mold using the number of times – the long-term use (> 1 million times) of the mold is to use steel at high hardness, hardness is 48-65 HRC. Average long-term use (100,000 1,000,000 times) steel molds pre-hardened to be used, its hardness is 30-45 HRC. Use short term (<100000 times) mild steel molds must be used, its hardness is 160-250 HB.
The surface roughness – Many manufacturers Plastic Mould interested in a good surface roughness. When adding sulfur to improve metal cutting, the surface quality will be diminished. High sulfur content of steel has also become more fragile.
2) cutting materials can affect the main drivers?
Chemical Steel composition is very important. The higher alloy composition, processing more difficult. When the carbon content increases, the decrease in metal cutting.
Steel structure of metal cutting is also very important. Different structures are: forging, casting, extrusion, rolling and cut. Forgings and castings are very difficult to machine the surface.
Hardness affecting an important factor in metal cutting. The broader rule is hard steel, the most difficult process. Speed steel (HSS) can be used to treat up to 330-400HB hardness material; broadband nitrogen steel + titanium (TiN) coating, can handle up to 45 HRC hardness of the material, while for 65-70HRC hardness of the material, must use carbide, ceramic, boron nitride and ceramic and metal cube (CBN).
Nonmetals doping generally have an adverse effect on tool life. For example, Al2O3 (alumina), it is pure ceramic, has a strong abrasive.
last is the residual stress, it can cause problems of metal cutting. Often recommended for the draft after the release process stress.
3) the cost of production molds from which the parties?
Roughly speaking, the cost of distribution is as follows:
Cup 65% Material piece 20% heat than 5% of the Assembly / Adjustment 10%
It is also very clear that good performance metal cutting and excellent solution for the cutting of the importance of economic output.
4) What is the cutting performance of the cast?
General is: higher hardness and strength of cast iron, metal cutting, the lower part of the blade and the tool life can be expected to lower. The production of pig iron for metal cutting most types of metal cutting in general very good sound. Metal cutting and structure related to processing harder pearlitic cast iron is difficult. Iron Flake graphite cast iron and malleable has excellent properties cutting, and ductile iron is poor. Encountered when machining cast iron
main type of wear: abrasion, adhesion and diffusion wear. Mainly by the abrasive carbide, casting parameters sand and debris generated hard skin. BUE obligations wear temperature low cutting speed and cutting conditions occur. Iron Ferrite among the easiest to weld the blade, but it can improve the cutting speed and temperature overcome.
On the other hand, the diffusion temperature and wear, when produced at high cutting speed, especially when use high-strength grades of cast iron. These notes have a high capacity of anti-variant, leading to a high temperature. A Such wear and iron tools and the role between the two, which makes a number of iron Xu Yong boron nitride ceramic or cubic (CBN) tools cut in processing high-speed, to get a good tool life and surface quality.
Generally required by a typical processing tool cast iron properties are: hardness and high temperature chemical stability, but also with the process, the workpiece and cutting conditions, peak demand with toughness, thermal fatigue and wear and edge strength. Cutting cast upon satisfaction of how to develop the tip wear: The Rapid change means that the hot cracking and foam board cutting notch Ershi premature rupture of broken parts, poor surface quality, Excessive ripple and so on. Normal flank wear, balance and sharp peak is generally required to do so.
5) What is the mold main, a common manufacturing process?
cutting process must be divided into at least three types of processes:
Roughing, semi-finishing and finishing, and sometimes super-finish (especially at high speed cutting applications). Shredder residues backgrounding process is of course after completing the preparation. The process should be in each process to come to ensure a uniform distribution of the left margin, it is very important. If the tool path direction and changes in workload bit fast life can be longer and more predictable. If possible, it should be done in the machine Special finishing operations. This will be a shorter period of time debugging and assembly to improve geometric accuracy and quality mold.
6) in these processes should be essentially tools to use?
Roughing process: round cutter, the cutter and a ball radius large nose mills.
backgrounding operations: cutting circular saw blade (standard 10-25mm diameter blade knives), cut-Ball-end.
Transactions Finishing: cutting circular saw blade, bur-end.
milling process maturity: round cutter, ball mills, vertical mills.
Size selecting the specific tool, the groove and the brand portfolio, as well as cutting parameters and grinding appropriate strategies to optimize the process cutting, it is very important.
On the high productivity tools can be used, see samples of mold using C-1102: 1
7) In the cutting process are the factors most important?
Cutting a process the most important goal is that each process each tool to create a uniform distribution of quotas. This means that you must use the tools of different sizes (small to large), especially in the rough About the Author
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Step Titanium Coated HSS High Speed Steel 3 Piece Unibit Set $36.33 Replaces 28 drill bits with these 3! Two flute design for faster, smoother cutting. Titanium Nitride Coating and made of High Speed Steel for cooler running and longer tool life. Includes protective case and measurements marked on each step of the bit. Features Include:Automatically De-burrs holes as you drillBit #1 hole range is 3/16″ – 1/2″ in 6 size steps (measured 3.25 inches in total le… |
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