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What kind of drill bit is good for iron drilling´╝čTypes and uses of drill bits [23 Feb 2021|06:20pm]
In fact, there are many types of drill bits, which are mainly distinguished according to their different uses, that is, what kind of drill bit is used for drilling.In order to let everyone better understand the relevant knowledge of drill bits, the following editor will give you a brief introduction to the uses of various commonly used drill bits..

Types of drill iron

The material of the drill bit is generally high-speed tool steel or cemented carbide, while high-speed steel is often used in the factory.rock drill bitsDepending on the material, it will use different speeds and add coolant.

1. Black drill bits are generally used for metal drilling, and the material of the drill bit is generally high-speed steel. Drill holes in general metal materials (alloy steel, non-alloy steel, cast iron, cast steel, non-ferrous metals), and use metalworking drill bits together.But pay attention to drilling holes in metal materials, the speed should not be too high, it is easy to burn the edge of the drill.

Now there are some gold that is coated with rare hard metal film. It is made of tool steel and other materials, which is hardened by heat treatment..The tip is ground at equal angles on both sides and tilted back a bit to form an acute cutting edge.Drill steel, iron, and aluminum that are not hardened by heat treatment. Aluminum is easy to stick to the drill bit, so it needs to be lubricated with soapy water when drilling..



2. Drill holes in concrete materials and stone materials, use percussion drills, and match masonry bits. The material of the cutter head is generally cemented carbide.Ordinary household, instead of drilling holes on the cement wall, use an ordinary 10mm hand drill.

3. Drilling wood.Drill holes in wooden materials and use woodworking drills together. Woodworking drills have a large sales volume and do not require high tool hardness. The tool materials are generally high-speed steel.There is a small point in the center of the tip of the drill bit, and the angles on both sides are relatively large, even without angle.Used in a good fixed position.Its practical rock drill bit for metal drilling can also drill wood.Because wood is easy to heat up and crumbs are not easy to come out, so you must slow down the speed, and often exit to remove crumbs.

4. Use tile drills to drill holes on ceramic tiles and glass with higher hardness. The tool material is tungsten carbon alloy. Because the tool has higher hardness and poor toughness, you need to pay attention to low speed and no impact..

How to choose a drill

Drilling operation is essentially a kind of cutting process. The prerequisite to complete the cutting process is that the hardness of the tool material must be higher than the hardness of the material being processed.



Precautions for using drills

The material of the drill bit is related to the hardness and rigidity of the heat treatment, and is also related to the angle of its grinding. Different sizes and different materials to be drilled must be ground into different angles and inclination angles..The harder the tool, the worse the toughness, the thinner the bit, the worse the rigidity.The drilling speed should not be too fast, especially the bigger the hole, the slower.It is best to add proper cooling oil or water.

Generally, when drilling a hole, it is necessary to make a sample and punch the hole first to prevent the bit from running off at the beginning.In household decoration, the general power of about 400W electric drill or percussion drill can meet the requirements.

So black drill bit drill iron is better, because we often need to make a hole or something, you might as well prepare a household drilling equipment at home, in case you need it..
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Method for preparing hard alloy bar for PCB micro drill [19 Feb 2021|11:56am]
Method for preparing hard alloy bar for PCB micro drill

[Patent Description] A method for preparing hard alloy rods for PCB micro-drills
Technical Field
[0001] The present invention relates to the production of PCB micro-drill rods [Technical Field], and specifically to a method for preparing hard alloy rods for PCB micro-drills.
[Background Art] [0002] As modern electrical appliances are becoming smarter and smaller in size, and demand for thinner wires and narrower pitches, printed circuit board manufacturing technology is developing rapidly, and the corresponding requirements for processing printed circuit board PCB holes The performance of PCB micro-drill material is developing towards higher strength, hardness and wear resistance.
[0003] At present, PCB micro-drills are mainly made of ultra-fine cemented carbide rods. Ultra-fine cemented carbide is a material with relatively good hardness, strength and wear resistance, and has been more widely used in modern industry..As the material of the PCB board is upgraded faster and faster, the material becomes more and more rigid. Due to the existence of many solid materials in the material, the low thermal conductivity of the material, and the higher and higher processing speed, the processing process will More and more heat is generated, which accelerates the wear of PCB micro-drills. Correspondingly, ultra-fine cemented carbide rods are required to have higher hardness, higher strength and higher wear resistance..
[0004] The PCB micro-drill rods currently on the market are mainly made of ordinary cemented carbide materials through the traditional ultrafine cemented carbide manufacturing process. There are many structural defects in the rods, which seriously affect the performance, hardness, and hardness of the drill bit. Poor strength and wear resistance, resulting in easy breakage of the drill bit, large hole diameter change, and hole wall finish that does not meet the requirements.

[Content of the invention]

[0005] The purpose of the present invention is to provide a method for preparing PCB micro-drills with cemented carbide rods. The PCB micro-drills processed from the rods made by the materials and methods are particularly suitable for processing diameters less than 0.3mm PCB panel through hole or blind hole tool to solve the defects of many bar defects, easy to break, and fast wear under the existing technology.
[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:
A preparation method of hard alloy rods for PCB micro-drills, the process steps of the preparation method are:
(1) Based on the total weight percentage, select the Fisher particle size as 0.6~1.0um Co powder 4~8%, VC powder 0.1~
0.5%, Cr3C2 powder 0.1 ~1.2%, TiN powder 0.005 ~0.01%, Y203 powder 0.01 ~0.06%, the rest is Fibonacci particle size 0.3~0.Add 8um WC powder to the stirring ball mill, and then add oleic acid.01~0.03%, polyethylene glycol 1~3%, fully stir and mix;
(2) Add alcohol according to the ratio of 400ml/kg as the grinding medium, add the grinding ball according to the ball ratio of 5:1, stir and grind, the diameter of the grinding ball is D4, the stirring speed of the ball mill is 500~850rpm, and the filling factor is 0.65. Grind for 6-10 hours to form slurry;
(3) Material: filter and dry, the mesh size of the filter sieve is 20~200, and the drying temperature is 50~250C, to make cemented carbide mixture pellets;
(4) The cemented carbide mixture pellets are molded by compression or extrusion or injection molding to make ultrafine cemented tungsten carbide plates for PCB micro-drills, and sintered; the sintering temperature during molding is 1360~1450C, Ar pressure 8~lOMpa, holding time 30~150min;
(5) Baking inspection, packaging and warehousing.[0007] As an improvement to the above technical solution, the added amount of the VC powder is 0.3%.
[0008] As an improvement to the above technical solution, the addition amount of the Cr3C2 powder is 0.8%.
[0009] As an improvement to the above technical solution, the amount of TiN powder added is 0.008%.
[0010] As an improvement to the above technical solution, the added amount of the Y203 powder is 0.04%.
[0011] Compared with the prior art, the beneficial effects of the present invention are: the present invention adds VC and Cr3C2 as crystal material inhibitors to the raw materials to ensure the refinement of the crystal material of the alloy structure. TiN and Y203 are added simultaneously during mixing, Effectively enhance the wear resistance of the bar made.PCB micro-drills made by using the bar made by this preparation method are especially suitable for processing diameters smaller than
0.3mm PCB panel through hole or blind hole cutter, less structure defect, high strength, high hardness, good wear resistance.

Detailed ways

[0012] The present invention will be further described in detail below in conjunction with specific examples and implementations thereof.
[0013] Example one:
(1) Based on the total weight percentage, select the Fisher particle size as 0.6um Co powder 4%, VC powder 0.5%, Cr3C2 powder 1.2%, adding TiN powder simultaneously 0.006%, nano Y203 powder 0.02%, the rest is Fischer particle size 0.4um WC powder balance, add to the stirring ball mill, then add oleic acid 0.01%, polyethylene glycol 1% for thorough mixing;
(2) Choose a 1400ml stirring ball mill, add alcohol to the mixture at the ratio of 400ml/kg to the mixture as the grinding medium, add the grinding balls according to the ball ratio of 5:1, stir and grind, the diameter of the grinding ball is D4, the ball mill Stirring speed 500rpm, filling factor is 0.65. Grind for 8 hours to form a mass; (3) Filter and dry the mass. The mesh size of the filter sieve for filtration is 20 meshes, and the drying temperature is 50C. Finally, cemented carbide mixture particles are made;
(4) The cemented carbide mixture pellets obtained in the previous step are molded, extruded, or injection molded to form a diameter
1.3_, length 40_ of the bar, which is the superfine cemented carbide blank for PCB micro-drilling, enters the sintering furnace for sintering molding; the sintering temperature during sintering molding is 1450C, the Ar pressure is 8Mpa, and the holding time is 60min ;
(5) Out-of-fire inspection, packaging and storage;
(6) After processing, the diameter is 0.3mm PCB micro-drills, the PCB micro-drills have a service life of 3000 holes in a single trimming, and the hole walls are smooth and qualified. In the same period, the commercial micro-drills can process an average of 2500 holes in a single trim, and the service life reaches 1.2 times.
[0014] The second embodiment:
(1) Based on the total weight percentage, select the Fisher particle size as 1.0um Co powder 8%, VC powder 0.l%, Cr3C2 powder 0.2%, adding TiN powder simultaneously 0.01%, nano Y203 powder 0.06%, the rest is Fischer particle size 0.8um WC powder balance, add it to the stirring ball mill, then add oleic acid 0.03% and 3% polyethylene glycol are fully stirred and mixed;
(2) Choose a 1400ml stirring ball mill, add alcohol to the mixture at a ratio of 400ml/kg to the mixture as the grinding medium, add the grinding balls according to the ball ratio of 5:1, stir and grind, the diameter of the grinding ball is D4, and the ball mill stirs Speed 850rpm, filling factor is 0.65. Grind for 10 hours to form a mass;
(3) The material is filtered and dried. The mesh size of the filter sieve used for filtering is 200 meshes, and the drying temperature is 50~250C to make cemented carbide mixture pellets;
(4) The cemented carbide mixture pellets obtained in the previous step are molded, extruded, or injection molded to form a diameter
1.3mm, 40mm length of the bar, which is the ultrafine cemented carbide blank for PCB micro-drilling, enters the sintering furnace for sintering; the sintering temperature during forming is 1360C, the Ar pressure is 10Mpa, and the holding time is 150min;
(5) Out of the furnace inspection, packaging and storage; (6) After processing, the diameter is 0.3mm PCB micro-drills, the PCB micro-drills have a service life of 3100 holes processed by a single trimming, and the hole wall is smooth and qualified. In the same period, the commercial micro-drills processed an average of 2500 holes in a single trimming, and the service life reached 1.2 times.
[0015] The foregoing descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in Within the protection scope of the present invention.

Rights request

1.A method for preparing hard alloy rods for PCB micro-drills, characterized in that: the process steps of the preparation method are: Cl) In terms of total weight percentage, the Fischer particle size is selected as 0.6~1.0um Co powder 4~8%, VC powder 0.1~0.5%, Cr3C2 powder 0.1 ~1.2%, TiN powder 0.005 ~0.01%, Y2O3 powder 0.01 ~0.06%, the rest is Fibonacci particle size 0.3~0.Add 8um WC powder to the stirring ball mill, and then add oleic acid.01~0.03%, polyethylene glycol 1~3%, fully agitate and mix; (2) Add alcohol at the ratio of 400ml/kg as the grinding medium, add the grinding ball according to the ball material ratio of 5:1, and stir and grind. The diameter of the grinding ball is D4 , The stirring speed of the ball mill is 500~850rpm, and the filling factor is 0.65. Grind for 6~10 hours to form a slurry; (3) Material: filter and dry, the mesh size of the filter screen is 20~200, the drying temperature is 50~250C, and it is made into cemented carbide mixture granules (4) The cemented carbide mixture pellets are molded by compression or extrusion or injection molding to produce ultra-fine PCB micro-drillsTungsten Carbide Burr BlankCemented carbide blanks, sintered and formed; the sintering temperature during forming is 1360~1450C, the Ar pressure is 8~10Mpa, and the holding time is 30~150min; (5) Out of furnace inspection, packaging and warehousing.
2.The preparation method according to claim 1, characterized in that: the added amount of the VC powder is 0.3%.
3.The preparation method according to claim 1, characterized in that: the added amount of the Cr3C2 powder is 0.8%.
4.The preparation method according to claim 1 or 2 or 3, characterized in that: the added amount of TiN powder is 0.008%.
5.The preparation method according to claim 4, characterized in that: the added amount of the Y2O3 powder is 0.04%.
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Why is there a color distinction for drill bits and what is the difference between them´╝č [07 Feb 2021|10:17am]
Drilling is a very extensive processing method in the manufacturing industry. I believe that the little partners who are often in the front line of drilling will not be unfamiliar with the understanding of drills. When purchasing drills, the drills will have drills of different materials and colors, so different colors. How can you help the drill bit? Is the color related to the quality of the bit? Which color bit is better??

First of all: It is impossible to distinguish the quality of drills from the color alone. There is no direct and inevitable relationship between color and quality. Drills of different colors are mainly processed by different processes. Of course, you can make a rough judgment from the color, but the current quality of the drills is also poor. Will process their own colors to achieve the appearance of high-quality drills.


There are 3 processes for producing drill bits, Black is rolled, the worst.The white ones are trimmed and polished.Because it does not produce high-temperature oxidation, unlike rolling, the grain structure of the steel is not damaged. It is used to drill workpieces with slightly higher hardness..tanThe drill bit is called cobalt-containing drill in the industry. This is the unspoken rule of the drill bit industry.Cobalt-containing diamonds are originally white and are produced by grinding. When they are atomized in the later period, they become yellowish brown (generally called amber), which is currently the best in circulation..M35 (Co 5%) and another isGoldenYes, this kind of drill is called titanium-plated drill, divided into decorative plating and industrial plating.The decorative plating has no effect at all, it's just beautiful and golden.Industrial plating is very good, the hardness can reach HRC78, which is higher than the hardness of cobalt-containing diamonds.

Judging from experience, in general, the white ones are generally all-ground high-speed steel drill bits, and the quality should be the best.The golden ones are titanium nitride-plated, and are generally either the best or the worst to fool people.The quality of black is also uneven. Some are made of very poor carbon tool steel, which is easy to anneal and rust at the same time, so it needs to be blackened..

Generally, when buying a drill bit, you can see the trademark on the drill bit shank and the mark of the diameter tolerance. The mark is clear, and the quality of laser or electric corrosion is not too bad..If it is a typeface embossed, if the edge of the word bulges, the quality of the drill is poor, because the bulged outline of the word will cause the drill bit to be less accurate, and the edge of the word is clear, which is very good with the cylindrical surface of the drill shank The bordered ones are of good quality.In addition, it depends on the cutting edge of the tip of the drill. The cutting edge of the fully ground drill is well opened, the spiral surface meets the requirements, and the quality is poor at the rear corner surface..

Everyone is welcome to add in the comment section that you think there are incorrect or missing parts in the article, so that the next person who reads will learn more, and what you know is what everyone needs...
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What brand of impact drill bit is good [03 Feb 2021|04:50pm]

Harbin No. 1 Tool Manufacturing Co., Ltd., Harbin Yigong, China Ten Hemp Flower Diamond Brand, China's Key Equipment Industry Large-scale Key Enterprise, China's Machine Tool Industry Famous Brand Product, Heilongjiang Province Famous Brand Product, Heilongjiang Province Key Equipment Enterprise, Harbin City Famous Brand Product, Provincial High-tech Enterprise, National Quality Management Award. Harbin No. 1 Tool Manufacturing Co., Ltd. is a large-scale backbone enterprise in China's key equipment industry, one of the sixteen key equipment industry enterprises in Heilongjiang Province, and the country's largest production and Research base.Hayi Jobs is the earliest company to build a factory in China's tool industry. During the 60-year development process, it has always mastered the core technology of China's sophisticated and complex tools. It has been leading the development direction of China's cutting tool manufacturing industry and represents my country's tool manufacturing industry. Highest level. The company is mainly engaged in the development, manufacturing, sales and service of various tools required by industries such as automobiles, aerospace, energy, machine tools and major equipment manufacturing, and military industries..The leading products are gear tools, broaching tools, indexable milling tools, threading tools, milling tools, drilling tools, Turning tools, sawing tools, woodworking tools, 9 categories, more than 200 varieties, more than 20,000 specifications, and an annual output of more than 15 million pieces.Among them, the production capacity of precision and complex tools is in the forefront of the industry, and the technical level is in the leading position in the same industry in China.The company has a marketing network and a sound after-sales service system covering 30 provinces, municipalities and autonomous regions across the country.Products are exported to many countries and regions in Europe, America and Southeast Asia. The company's technology center is the only national enterprise technology center in the tool industry recognized by the country in 1995. It has 298 professional engineers and technicians, 12 of whom have won the title of national government special allowance experts and young and middle-aged experts. The company has domestic leading technology and product research and development capabilities. A number of scientific and technological achievements have been awarded the titles of excellent new products at national, provincial, and municipal levels, as well as provincial and municipal scientific and technological progress awards. The scientific and technological achievements have obtained 31 patents..At the same time, passed the ISO9001 quality management system certification. For a long time, the company has always adhered to market-oriented, and constantly promoted the rapid development of enterprise science and technology, and developed high-speed and high-efficiency gear hobs and heavy-duty spline broaches for the automotive industry for key national industries; used to manufacture aircraft engines and steam turbines. Slot broaches; indexable gear milling cutters used in the wind power industry, and many high-end tools urgently needed by the manufacturing industry, achieving the goal of replacing imports. As the first tool manufacturing enterprise in the tool industry in New China, in the process of continuous development and progress, it has accumulated rich experience in tool manufacturing and research and development, and has created "YiGong", a first-class brand in China's tool industry..Successively won the "National Quality Management Award", "Top Ten Famous Brand Products in China's Machine Tool Industry", "Heilongjiang Famous Brand Products", "Harbin Famous Brand Products", "Provincial High-tech Enterprise" and other honors. In recent years, the company has made full use of the country's opportunity to revitalize the northeast old industrial base. With the attention and support of the state, province, and city, the company has successively obtained the "CNC Tool and Broaching Tool Technology Reform Project" with a total investment of more than 400 million yuan. High Speed and Efficient CNC Tool Expansion Project "Two Projects.Through the implementation of two projects, the company's overall strength has been greatly improved.Accelerate the expansion of the production and sales scale of three types of superior products led by gear tools, broaching tools, and indexable milling tools, and strive to improve the technical level, grade and taste of products to achieve the industry-leading and world-class goals.Adjust the product structure of standard cutting tools, promote industrial upgrading, and make standard rock drill bits Quasi-tools win the market by relying on economies of scale and superb product quality. At the same time, the company completed the historic relocation and transformation, creating a brand new development platform for the development of the enterprise.The new company covers an area of 11.60,000 square meters, 1,900 employees, total assets 4.800 million yuan, with 1,852 production equipment and instruments (sets).Production facilities, production equipment, production scale and production capacity have been fully upgraded. Today, hard-working and intelligent workers are shouldering the lofty mission of people-oriented, innovative development, and building a harmonious Harbin Industrial Group on a new development platform. They are bound to write on the road of adhering to the development of concept innovation, system innovation, and technological innovation. A glorious new chapter of Harbin Yigong, achieving the long-term goal of "leading the development direction of the domestic tool manufacturing industry and becoming a brand enterprise with international influence".

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