The male and female screws are mainly used in computer, circuit board and other industries. When one end is screwed into the locked object, the hexagonal column is exposed, which can fix or isolate other objects. The male and female screws are assembled on the computer host. The external thread connects the main board inside the host. The internal thread separates the main board from the sheet metal shell. The terminal line to be connected is connected with a screw from the internal thread of the sheet metal shell and the male and female copper column.
Main specifications Din316 Wing Screws,Female Male Screws,Hexagonal Column Screw,Flat Point Hollow Set Screw Suzhou Gubao Screws Co.,Ltd. , https://www.hongyiscrew.com
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>The protection and protection of the bearing housing Housing protection and protection
In the following stages of the operation of the bearing housing, special attention should be paid to: (1) the use of the bearing housing cooling system. In the case of proper use of the bearing housing cooling water, not only the service life of the bearing housing is extended, but also the production power is improved. Lieutenants often ignore the importance of it; the operators also save energy; pick up and take too much trouble; do not pick up the cooling water pipe; some companies even in the custom bearing housing is divided into saving money, actually do not cooling water And then formed a very serious result. The information of the bearing housing is usually made of special bearing steel through various treatments; even the best bearing steel also has their limit of use; for example, the temperature. In the application state; if the mold temperature is too high; very simple will make the appearance of the core early as early as the turtle crack; some bearing housings and even have not exceeded the 2000 model turtle cracks on a large area. Even the bearing housing is in production Because the temperature of the bearing housing is too high, the core has changed color; it has been measured and even reached more than 400 degrees; such temperature is very brief and the crack is presented in the state of chilling of the releasing agent; The product produced is also slightly deformed; strained; the mold is presented. The use of the mold release coolant can greatly reduce the use of the release agent; thus the operator will not use the release agent to lower the temperature of the housing. The advantages are the useful life of the extended bearing seat; saving the die-casting cycle; improving the quality of the product; reducing the occurrence of sticking and straining and sticking aluminum; reducing the use of the release agent. The loss of the ejector pin and the core. (2) It is necessary to preheat the bearing seat in the process of the production of the bearing seat; prevent the occurrence of cracks in the turtle caused by the hot metal liquid in the cold bearing seat; The messy bearing seat can use the blowtorch; the liquefied gas; the mold temperature machine with good condition; the simple bearing housing can use the slow injection preheating. (3) The finishing of the bearing seat parting surface; this is very troublesome. It is also very simple to ignore; if the boss has a high starting point; buy a good bearing seat; then it seems much easier to work; if the bearing seat quality is not good; in the production part of the bearing part of the surface will inevitably have flash or dirt of Attacks; operators should often organize these parts; always equip a small blade (the company should give your workers a complete preparation of things; have a good gun to cross the troops). If there is a flash, it is not removed in time; The parting surface is simply collapsed; it forms aluminum during the production process; once this result is formed; no matter how good you are, the possibility of complete correction is small; not that they have no ability. The result is not only increased the cost of die casting; the white aluminum smashed off; the quality of the product is also unstable; especially the internal quality; and the difficulty of determining the process parameters; the pass rate will drop a lot; from safety thinking; The probability of injury at work. At the time of handover; the operator uses the kerosene to completely remove the parting surface of the bearing; not only can prevent the bearing seat from being crushed; but also by removing; the release seat can be released from the bearing Residues or other exhaust vents blocked by dust; open to facilitate the discharge of gas in the cavity during the process of injection; improve the quality of the product; The second is appropriate. It is necessary for the employees to develop an outstanding habit. (4) If the bearing housing is equipped with neutron control; then it is necessary to prevent the signal line between the die casting machine and the bearing housing from having a joint appearance; the reason is very clear; It is difficult to prevent water on the signal line; perhaps the joint of the joint is simply broken; then it is short-circuited with the machine tool; if the signal is faulty; the alarm is active and the time is delayed; the signal is out of balance; Bad. Form unnecessary drops. The travel switch pays attention to waterproof. (5) When each team takes over; carefully check according to the company's "bearing point check list"; find problems in time to deal with; prevent unnecessary formation of individuals Expensive. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Furthermore: the responsibility of the model repair class plays a role in the protection and protection of the bearing housing.æ½žèž…è’ P奕嗽北匦攵哉馓å—岢岢幸桓龊芟晗 Fu Mu private çŒ“æ§ ç¼ƒåˆ‚ 较 较 较 较 较 较 较 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌 嗌倌饽 æš— æš— æš— å²¢ å²¢ å²¢ å²¢ å²¢ 竦 竦 竦 竦 å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Protection; repair; in the process of protection, it is necessary to grasp a criterion; certainly not to change the scale of the bearing seat; to carry out the operation under such a condition - if the original scale is changed once; there is an episode of the mass quality accident; It will be very heavy. (2) According to the company's "Modular Protection Protection and Handling Rules", it is really protective and protective. In the process of protection; the mold repairer lacks understanding of the application; for example, polishing the bearing housing. The top of the process is similar to the coarse oil stone; some even put the polishing machine on the impeller to the core Row polishing; not only the surface of the core is deep scratches everywhere; and the nitride layer on the outer core of the core is damaged; the die casting can not be used at the next production; it is not a sticking mold; it is a strain. There are many cases; The production of the previous bearing housing is good; it will not work if it is re-produced this time; except for other external factors; this is a very important reason. (3) About the wearing parts, the ejector, the core, etc. Should be carefully reviewed; there are no tortuosity; cracks, etc.; if it is replaced in time; in many cases, when the bearing housing is re-produced, the number of cores is not broken when it is finished; most of the reasons are not carefully observed; there is no difficulty in early detection. The formation of manpower and the moment of great ruin. (5) polishing bearing seat needs to make up a point; where there is sticky aluminum; where there is carbon deposit polishing; try to reduce the wear caused by the polishing of the bearing housing. 6) Respond to all parts of the bearing seat; and the joint parts; Screws and other smooth and anti-rust treatment. (7) bearing seat personnel to supervise the protection at any time; pay attention to other handling details Do a good job protecting the repair records for future reference.
The bearing housing should be kept in the account; drawings; files; etc. Consistency; the bearing housing can not be opened and stored; the parts are prevented from being thrown away; the bearing housings that are not used for a long time are regularly treated for anti-rust treatment. The new bearing housing is in the regular Try to do stress treatment during the period; to extend its life.
In the process of protection and repair; some are quite simple; they all understand; but it is difficult to do it in real life; the demand is fulfilled with due diligence; the homework is done. It is one of the three essential elements in production; The quality of the application directly affects the life of the bearing housing; the power of production and the quality of the product; the cost of die casting. Regarding the die casting workshop; the outstanding protection and protection of the bearing housing is a strong guarantee for the smooth production of normal production; The stability of the product quality; the intangible production cost is greatly reduced; then the production power is improved. Based on the problems encountered in the practice of production; let's discuss how to better protect the bearing housing.
First of all: establish a bearing housing file; make preparations (1) that is to set a complete set of operational records for each bearing housing when entering the factory; this is an important basis for ensuring future protection and protection; each must be done Detailed; clear; including the daily production model ~ as a bearing seat handling personnel; bearing housing from the factory into the future; each of the layout accessories need to be specifically recorded in the bearing housing file; Demand; some of the vulnerable parts in the bearing housing; early preparation of accessories; analog ejector; core; etc. ~ ~ establish the minimum inventory of vulnerable spare parts; then not due to lack of preparation and delay in production. Because in the company There are many such experiences; there is no need to prepare for it. If the individual does not have spare parts, it will delay production; the cost of the die-casting company is very big; time; manpower; electricity for holding furnace (perhaps liquefied gas) It is not a small number; the most important is the delay in production; the delay in delivery will be even greater. 3) It is necessary to engrave the permanent bearing on the bearing housing itself for the bearing housing. Arguing. This way, as long as people who are not stupid will not form a farce with the wrong bearing seat. (4) If there is a bearing housing for the cylinder core puller; quickly equip it with a quick-change joint; otherwise, each time the housing is removed The money that is leaked out of the oil in the cylinder meets the salary of several employees for one month; you can also use the money saved to improve the meal for the staff. This also greatly shortens the time for the die-casting operator to unload the bearing seat; Things to get. Remember to buy some good quality quick connectors; otherwise, pull out the seedlings to help. (5) Early development of the bearing seat handling rules; system training for employees; the actual implementation.
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The main specifications of male and female screws are m3, M4, M5, M6, M8, m10and so on. Their hexagonal columns are 5, 6, 8, 10, 12, 15mm and so on, among which m3 series is the most suitable. In addition to copper, there are stainless steel, fast cutting steel and so on.
Housing protection and protection
Source: China Bearing Network Time: 2013-09-30