DLOUHÉ ČASY
Diamond segment production process
Diamond segments go through a very large number of steps in the production process, and these steps can be summarized in three parts, which we will briefly introduce below:
The first part, the preparation stage, the first step in the production of diamond segments is the preparation process, because the diamond segments for different stone generally use different formulas, each formula with some differences in the material, so the ingredients of this link is very important, only with the right powder, the final product can achieve our expected results. Preparation is not only the preparation of each material, but also involves the weight and volume of various materials. In addition to the preparation of materials, if it is a customized product, we also need to prepare the corresponding specifications of the mold.
The second part, the production stage, the production stage of the diamond section, is mainly divided into the following steps:
1: Mixing, mixing the materials by machinery, mixing the diamond powder and metal bond powder fully and stirring evenly.
2: Cold pressing, allowing the carcass to be shaped and prepared for sintering.
3: Hot pressing, also known as the sintering process, puts the segments into the mold for high temperature and high pressure sintering, allowing the segments to take final shape.
4: Cooling and demolding, this is the last step of the whole segment production, generally by placing the abrasive tool on top of the steel plate at room temperature for cooling and demolding.
The third part, post-processing stage, after the segment is done, it should be deburred, trimmed and other processes to make the segment look more beautiful. Even some segments will need to grind arc, so that the segment later better open edge.
What are the methods of testing the quality of diamond segments?
Diamond segments are more effective and fast stone cutting things at this stage, so it has been widely used, so how to detect the quality of diamond segments?
1. scale Diamond segment scale reflects the sintering process is good or bad, accurate calculation of the amount of addition, in the correct sintering process conditions, the segment scale allows a deviation of 0.1mm, otherwise there are problems, the general situation is the scale is too large, the reasons are: powder oxidation severe, in the specified temperature and pressure, but still pressure is not in place; temperature does not work, the alloying has not been formed, in the application of pressure, but also a drop in the bucket; pressure preservation Cooling time is not good, too early to unload the mold, the section is not shaped when there is a rebound phenomenon; add too much material; mold is too old scale is large. Segment scale is large to clarify the density is not, so that the bonding agent on the diamond to grasp the ability to greatly reduced, the segment appears sharp, but the life is greatly reduced.
2. Hardness Hardness is one of the indicators reflecting the generalized elements of diamond segment quality. It elucidates the quality of metal powder, formula and process in the production process of segments, and cannot directly indicate the cutting ability of segments. Under the conditions of formula and sintering process, the hardness is within a certain range, below or above this range, it is stated that the quality of segments is not good.
Hardness is too low: indicates that the quality of the metal binder is not good, in general, there is one or several kinds of metal powder oxidation, hardness is lower than 50HRB when the oxidation is very serious, the resulting section of good sharpness, but the life of the severe shortage. The amount of metal powder is too small, weighing inaccurate, sintering temperature is too fast, causing part of the overheating and run, or use too old graphite molds, etc., will form the hardness is too low.
Hardness is too high: in the original process conditions remain unchanged, the hardness is too generally indicate that weighing error or add too much, part of the temperature is too will also form the hardness is too. Hardness is outdated, the carcass is not easy to wear, diamond out of the edge is difficult, the segment will become blunt.
Uneven hardness: Uneven hardness is caused by poor operation of the mold installer, and uneven hardness can also be formed when the holding time is too short or the cooling time is too short.
3. Density and quality: Divide the practical weight of the diamond segment by the practical volume of the segment, and the result is the density of the segment as a whole. Density test is quite important, especially in the absence of a hardness tester, the size of the density reflects the function of the segment. Minimum density is calculated as follows: Minimum density = total weight of the section of the total weight of the section of the standard volume X95%. The reason why the weight does not work is mainly because the heating speed is too fast, causing “running material”.
How to choose the right diamond segments
1、Processing target: according to different processing target selection stone special, concrete special, tile special, marble special saw blade.
2, sawing equipment: according to the sawing equipment selection diamond saw blade. Equipment power can choose wear-resistant saw blade to ensure its life, equipment power is small pick sharp type products to ensure its cutting efficiency. For the cutting machine which has a bias swing or poor precision, it is better to choose the wear-resistant saw blade, and for the newer cutting machine which has good precision, it can choose the sharp saw blade.
3, a few scale: refers to the specifications of the material to be cut and the quality requirements of the selected scale and type of saw blade. Například, the diameter of diamond saw blade should be greater than three times of the target workpiece being cut.
At the same time, according to the processing accuracy requirements selected saw blade structure form, that is, the requirements of sawing smooth appearance or processing of thin, fragile materials, should be selected with a narrow groove type or continuous tooth saw blade, on the contrary, sawing the appearance of the requirements of the material is not or thicker, you can choose to use wide groove type saw blade.
Selection of diamond segments must pay attention to the above mentioned three aspects of the matter: processing goals, sawing equipment, a few scale. The bought products should be stored properly, otherwise rust spots will occur and can not be used.
The role of different types of diamond saw blade segments
Classification and function of several common types of segments
1, row according to the segment for processing marble, limestone and other medium-soft stone and other large-size plate cutting; with high precision, high efficiency characteristics.
2, good cutting effect, smooth cutting, stone cutting surface and size flat.
3, cutting noise is small, small stone cutting gap to maximize the use of stone and thickness.
1, mainly used for cutting granite marble barren material; characterized by high cutting efficiency, high accuracy and long life.
2、High flatness of cutting plate, smooth cutting, low noise.
3、Cutting stability, narrow cutting groove, saving stone.
1、Multi Blade And Segment is suitable for multi-saw blade combination, large and small saw blade combination, large and small saw blade combination and other combinations.
2, with good sharpness, synchronization of large and small pieces, high efficiency, power saving and other characteristics.
1、It is mainly used for the mining of granite mine barren material.
2、It is characterized by high cutting efficiency, power saving and long life.
Sandstone Segment
1, mainly used for all kinds of sandstone mining, barren material cutting; cutting sharp, ultra-long life.
2、High flatness of cutting plate, narrow cutting groove, saving stone, smooth cutting, low noise.
3、Simple and rapid opening edge of M section.
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