Bearings in the course of the following points to pay special attention to: (1) bearing seat cooling system. Housing cooling water in the correct use of the case not only to extend the service life of the bearing, but also improve production efficiency. In actual production, we often neglect its importance, the operator also plans to save trouble, then pick up too much trouble, do not pick up the cooling pipe, and some companies even in the custom bearing seat in order to save costs even when not Cooling water has very serious consequences. The bearing housing materials are generally dedicated bearing steel produced through a variety of processes, even the best bearing steel also have their use of the limit, such as temperature. In the use of the bearing seat, if the mold temperature is too high, it is easy to make the mold surface early cracks appear, and some even more than 2000 times the turtle cracks on the large area appeared. Even the bearing seat in the production because the bearing seat temperature is too high, the core has become a color, after measuring even reach more than 400 degrees, this temperature and then meet the release agent chilling conditions are prone to crack, production The product is also easy to deformation, strain, die and so on. In the case of the bearing housing cooling water can greatly reduce the use of mold release agent, so that operators will not use mold release agent to reduce the bearing temperature. Its advantage is to effectively extend the bearing life, saving die-casting cycle, improve product quality, reduce sticky mold and strain and sticking aluminum occurred, reducing the use of release agent. But also reduce the bearing seat temperature caused by overheating mandrel and core loss. (2) bearing housings in the process of production must be preheated bearing housings to prevent the cold bearing suddenly encountered hot metal liquid and lead to the emergence of turtle cracks, the more complex bearing seat can be used torch, liquefied Gas, good conditions with the mold temperature machine, a relatively simple bearing can preheat using slow pressure shot. (3) of the bearing seat surface cleaning, this is very troublesome, but also very easy to ignore, if the boss starting high, buy a good bearing, then it seems much easier to work, if the bearing mass Not good, the production of bearing surface is inevitable that there is a flash or dirt generated, the operator should always clean these parts, ready to provide a small blade (the company should give your staff to prepare the tools, Have a good gun to fight). If there is no flash in time to clear, the bearing seat surface is easily collapsed, resulting in the production process of aluminum, once the result, no matter how good your mold repair experts, the possibility of complete repair is very Small, not they have no ability. Occurred after running the consequences of aluminum, not only increased the cost of die-casting, aluminum wasted, the product quality is not stable, especially the internal quality, but also increased the difficulty of determining the process parameters, the passing rate will drop a lot, from safety considerations, Increased the chance of injury at work. In the handover, the operator of kerosene completely clean the bearing seat surface again, not only to prevent the bearing will not be crushed, and after cleaning, the bearing seat can be release agent residues or other dirt Clogged exhaust groove opened up, is conducive to injection of gas in the cavity of the cavity to improve product quality, a group to clean sub-surface down twice appropriate. Make employees develop a good habit. (4) If the bearing is equipped with neutron control, be careful not to forbid the signal line between the die-casting machine and the bearing seat. The reason is very clear. In daily production, it is difficult to avoid the signal line being wetted or Joint bandaging easy to break, resulting in short circuit with the machine, if the signal error caused, ranging from alarm to automatically shut down the delay time, heavy signal disorder, the top of the bearing block is bad. Cause unnecessary loss. Travel switch pay attention to waterproof. (5) When each shift team takes over, in accordance with the company's "bearing seat point inspection table" to do serious inspection and found the problem solved in time, so as not to cause unnecessary trouble to themselves. Furthermore: the role of mold repair classes in the bearing maintenance and repair play a "cure, disease-free physical" role for a set of chock bearing a batch of tasks completed, after the bearing block is removed, the mold Repair personnel must have a very detailed understanding of this set of housings, such as the total number of molds produced so far, what went wrong, see the tail pieces of products to understand the current state of the bearing, whether to the safe use of the bearing Life expectancy, whether according to the production volume reported to the shop mode, etc. ~ This must check the file of this bearing; (1) Die repair personnel in the maintenance, repair and maintenance process must master a principle, absolutely not allowed Change the size of the bearing seat, in such a premise to carry out the work, if once the original size change, there will be a batch quality of the accident, the loss will be very heavy. (2) According to the company "Die repair maintenance management regulations" do a good job of maintenance work. In the maintenance process, the mold repair workers on the lack of awareness of the use of tools, such as the bearing in the process of polishing with relatively coarse whetstone, and some even put the polishing machine mounted on the impeller to mold core, not only caused the mold Depth of the core surface is full of scratches, but also to the mold surface nitriding layer, the next time the die-casting simply can not use, not sticky mold, is the strain. In many cases, this is the case, the last production of a good seat, and so on the reproduction of how to do nothing, in addition to other external factors, this is a very important reason. (3) For consumable parts such as ram, core should be carefully checked, there is no bending, cracks, etc., if there is timely replacement, many cases is not completed when the reproduction of the bearing block number of sub-type core is broken, most The reason therefore did not carefully check, there is no problem found in advance, resulting in a great waste of manpower and time. (4) polished bearing need to add that where there is sticky aluminum, where there is carbon deposition on where to minimize polishing due to the bearing caused by the wear and tear. (5) All parts of the bearing should be lubricated and rust-proofed with the combination of parts, screws and so on. (6) bearing seat management at any time to monitor the maintenance status, pay attention to other management details. Good maintenance and repair records for inquiries. Bearing the custody of the account should be done, drawings, files, and so the consistency of the bearing seat can not be opened apart to avoid the loss of parts, long-term non-use of the bearing to do regular rust-proof treatment. The new bearing as far as possible in the specified period of stress treatment, to extend its service life. In the process of maintenance and repair, some of them are quite simple to understand. However, it is very difficult to make real progress. We need to fulfill our due diligence and do our work well. Is one of the three essential factors in the production, the use of housings directly affect the bearing life, production efficiency and product quality, the cost of casting. For the die-casting workshop, the good maintenance and maintenance of the bearing seat is a strong guarantee for the smooth progress of normal production, is conducive to the stability of the product quality, and largely reduces the intangible production cost so as to improve the production efficiency. According to the problems encountered in the actual production, we explore how to do a better maintenance of the bearing seat. First of all: the establishment of the bearing seat file, ready (1) that is, to each set of bearing in the factory to establish a complete set of records, which is to ensure that after maintenance and maintenance of an important basis, each have to do Of the detailed and clear, including the daily production mode, etc. ~ As a bearing management, since the bearing seat into the plant, each part of the structural parts must be carefully recorded in the bearing file, and according to need, The vulnerable parts of the bearing housing list, in advance to prepare spare parts, such as rams, cores, etc. set the minimum stock of fragile spare parts, so as not to delay the production due to lack of preparation. Because there are so many lessons in the company, there is no substitute for it. If you do not have spare parts because of their delay in production, the die-casting enterprises for the cost of a lot of time, manpower, holding furnace electricity (or liquefied gas) are not a small figure, the most important is the delay in production, Delayed delivery loss will be even greater! (2) to the bearing housing while doing resume card at the same time it is necessary to engrave a permanent mark on the bearing itself, easy to distinguish. So long as not stupid people will not cause the fault of the seat mounted farce. (3) If the housings with cylinder-core retractor are equipped with quick-release couplings as soon as possible, the amount of money wasted every time the housings of the housings are disassembled and disassembled are enough for you to pay several employees a month's salary , You can also use the money saved to improve the meal for the staff. This also greatly reduces the die-casting operator loading and unloading of the bearing time, in one fell swoop a few things. Remember to buy some good quality quick connector, otherwise counterproductive. (4) Develop the bearing seat management regulations in advance, carry on the systematic training to the staff, carry it out practically.
Xlong Seal Co., Ltd. , http://www.xmseals.com