Diamond Concrete Core Drill Bit

1. High efficiency and long lifespan
2. Competitive price and stable quality
3. Production capacity: 40,000 pieces/month
4. Various diamond drill bit sizes and types available
5. Good drilling result: smooth drilling and no chipping

Diamond Concrete Core Drill Bit

Experienced manufacturer of Diamond Concrete Core Drill Bit, we supply diamond segments, diamond saw blades, diamond wire saw and diamond grinding tools for stone factories, quarries and wholesalers all over the world.


Drilling granite, marble, stone, concrete, bricks, blocks, rock and concrete with steel.
1.For diameter from 10mm to 38mm, high quality 10mm high quality crown (ring) diamond segments are used, it would provide an easy start-up when hand held drilling.
2. For core bits diameter from 40mm to 500mm, high quality 10mm high diamond segments with castellated tips are adopted to insure an easy start-up and fast opening of the segment. Usually customers will choosing the thread of 1-1/4-7.

Details of diamond drilling bits

1. Popular adaptor size: diameter 6/8/10mm shank, M14 thread, M16, G1/2", 5/8"-11 thread and 1-1/4"-7 UNC etc.
2. Segments including:1)crown type; 2) turbo type; 3)roof type 4)straight type for you to choose.

Packaging and Shipping for Diamond Drill Bits

Inner packing: a diamond drill bit is covered by antirust paint and plastic, then packed in a paper box; outside packaging is according to the transport way, if by air, we recommend carton package which will reduce the weight; if by sea, we recommend crate which is seaworthy. Other packaging is also available upon your request.
Urgent order with less weight or samples, courier service is recommended;
Normal (regular) order which weight over 45kgs, delivering by air is recommended;
Big diameter saw blades or heavy weight products, shipping by sea is recommended.
Edgestone will offer advices according to the actual order requirements.

Our Services

1. Fine raw materials are used for processing, high grade raw materials, imported cobalt powder and high-quality diamond single crystals, to ensure the best performance of our products.
2. Customized designs are available. We can also help customers design and develop new products, and adjust cutting efficiency and lifespan upon your request.
3. Knowledgeable sales representatives are available to reply all inquiries and e-mails within 24 hours.
4. Every details will be confirmed with you before production.
5. Each processing would be completed by our skillful worker.
6. Strict quality management system. During the whole production process, from raw material choosing, processing to packing, our quality assurance people will strictly control each single and every process to guarantee quality standards and punctual delivery.
7. Detailed and clear pictures will be sent before packing and loading for you.
8. We will keep you update of the order and shipping status till you get the products smoothly.

If you're interested in Diamond Concrete Core Drill Bit, just feel free to contact us, we will keep providing excellent service and good quality products for you.

Contact Info.

Sales Manager: Adam Li
Phone/WhatsApp: 0086-15805032000
Skype: adam-li@outlook.com

a typical formulation of a reamer manufactured by a pressureless impregnation method was summarized for readers' reference. 7 -31. Among them, YZ is a cast carbonized pigeon powder: thorium powder: mirror content is 99.9%, particle size is 300 mesh: silicon powder: silicon content 99. 5%, 300 mesh. At the same time, their technical conditions are listed in Table 7-32, Table 7-33, and Table 7-34.    3. Process flow The process of manufacturing a diamond reamer using a pressureless method is shown in Figure 7-67.    The Figure 7-67 Pressureless reamer process flow chart       4. Mold structure Pressureless impregnation method for manufacturing spiral reamer die structure 7-68 As shown by graphite die, die and bottom die, and steel body set to make. Mold and die are one of the most important parts of carcass forming. Its effects are: First, it can produce co atmosphere during sintering to prevent oxidation of the upper steel. Second, it can apply pressure to the carcass after it is released. The upper end is shaped to facilitate machining of the reamer. The bottom mold cover is the foundation of the combined mold to prevent the furnace from inverting during sintering and maintain the concentricity between the carcass and the steel body. The matching of the various parts of the mold must be done in two ways: 1 There must be a thin layer of powder between the stamper and the mold to form the capillary action impregnation passage to ensure that the carcass powder has a perfect impregnation process; 2 The concentricity of the carcass and the steel body is Reliance on the lower part of the outer steel body and the special fitting bottom mold with high precision  To achieve, and therefore requires the steel body and bottom mold with a good fit. 5. Reamer manufacturing process.  (1) Selection of sintered body. The sintered body is a reamer's cutting material and its quality is good or bad   1. Steel body; 2. Die; 3. Carcass skeleton material; 4. Model; 5. Burst metal material;   To a large extent determines the effect of hole expansion, so it has the following requirements: 1 and TL80 # ZR2 grinding wheel grinding ratio of more than 000: 2 better thermal stability; 3 sintered body size use φ1. 8mm × 4n1n1, so that In the mold assembly, beautiful appearance. The surface of the sintered body must be cleaned to remove impurities. It is usually washed with propylene chloride, and the ultrasonic cleaning effect is better. In the conditional unit, a thin layer of copper or copper is preferably plated on the surface of the sintered body (thickness is about 0.10 to 20n1m) to increase the volume of the sintered body and the skeleton material. Dynamic strength. (2) Mold processing and placement of the sintered body. Diamond Concrete Core Drill Bit. The die is first machined into an inner circle adapted to the outer diameter of the core tube, and then is pulled on a special machine or lathe. The groove depth should take into account the shrinkage of the carcass, and the number of spiral grooves depends on the width of the groove and the size of the reamer. The positioning of the sintered body is generally glued to the spiral groove of the die, and the number of the sintered body depends on the application of the formation and the size of the reamer, such as Φ56. 5mn1 reamer placed 54 sintered bodies, 48 ​​grains and 42 Three kinds of tablets. And   (3) Determination of carcass skeleton powder loading. The volumetric charge per unit volume depends on the theoretical density of the skeleton powder mix and its bulk density, and its value is based on the principle of obtaining the best carcass properties and the inclusion properties of the sintered body. Figure 7-69 shows the relationship between the flexural strength and impact toughness values ​​of the carcass and the actual density. (4) Apply protective layer. In order to prolong the service life of the graphite mold and prevent the graphite from causing carburization on the steel body, it is difficult to process it. Applying a thin layer of A12 03 gasoline rubber solution on the mold surface will greatly prolong its service life, such as the bottom mold.