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introduction：In large forging，When the raw material quality is poor or the forging process is improper，Often prone to forging cracks。The following introduces several cases of forging cracking due to poor material。 (1)Forging cracks caused by ingot defects Most ingot defects，Can cause cracking during forging，picture6-8Be shown as2Cr13Center crack of spindle forging。This is because the6tThe crystallization temperature range of ingot solidification is narrow，The coefficient of linear shrinkage is large。Insufficient condensation feeding，Large temperature difference between inside and outside，The axial tensile stress is large，Cracking along dendrites，An intergranular crack was formed in the ingot axis，The crack is further expanded during forging, resulting in a crack in the spindle forging。the
2015-01-09 Reading quantity 1557
introduction： one、Code composition bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The code name consists of the basic code name and the post-code name。 two、The constitution of the basic code The basic code is divided into three parts，The front part is the structural type and transmission type code，The middle part is the diameter of the rolling element(For bearings with more than two rows of rolling elements, the maximum rolling element is straight
2015-01-09 Reading quantity 1551
introduction：one、 Conscientiously implement《General operating rules for forging equipment》Relevant provisions。 two、Conscientiously implement the following supplementary provisions： （one） Work hard before you start： １、 Check the tool should be intact without cracking，Properly installed、fastness。 ２、 Before the empty run test，The flywheel rotation or manual movement of the flywheel should be used to make the equipment move one stroke，After confirming coordination among agencies，Then the official test run。 （two） Take it seriously at work： １、The clearance and sharpening of the tool must be adjusted at any time according to the strength and section size of the material to be cut。 ２、 Equivalent length limit
2015-01-09 Reading quantity 2827
introduction：The level of automation is increasing in the manufacturing industry，The range of applications is expanding。Automation in the packaging industry is changing the way packaging processes operate and the way packaging containers and materials are processed。 The level of automation is increasing in the manufacturing industry，The range of applications is expanding。Automation in the packaging industry is changing the way packaging processes operate and the way packaging containers and materials are processed。Automatic control of the packaging system can greatly improve production efficiency and product quality，Significantly eliminate errors caused by packaging processes and printing and labeling，Effectively reduce the labor intensity of employees and reduce energy and resources
2015-01-09 Reading quantity 2929
introduction： alloy Iron-carbon alloy（） Aluminium alloy() Deformation velocity/（m/s） ＜1 ＞1① ＜1 ＞1 Deformation temperature/℃ （0.8～0.95）Tmolten② 0.40 0.35 0.50 0.48 （0.5～0.8）Tmolten
2015-01-09 Reading quantity 2935
introduction：According to the functions of each part of the automatic control system (Such as detection、reveal、Adjustment and operation, etc)A plurality of unit instruments with independent functions,A set of regulating instruments in which the units are connected to each other by a uniform signal。Use these units to combine according to different functions and usage requirements，It can constitute a variety of single parameter or multi-parameter automatic control system。Unit combination meters are very versatile，Since the20century50Since then, many series have been developed。They have different structural principles，Unit varieties are also inconsistent，Parallel element、The development of the process continuously improves the instrument series。Several commonly used functions can also be combined in a single
2015-01-09 Reading quantity 2810
introduction： one、Working principle and function JSBSeries pipeline filters for oil、Chemical engineering、Light industry、medicine、Liquids and gases and gaseous materials in the production of food and other industries，To filter its fixed impurities。Usually installed in the pump、Compressor inlet or flowmeter in front of the pipe，To protect such equipment and instruments。Filters also improve product purity，A small device for purifying gas。The main principle of its operation is when the fluid enters the filter，Filter medium for filtration system
2015-01-09 Reading quantity 2856
introduction：bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Precision parts，Only some of the bearings are damaged in practical applications。 There are many reasons for most bearings to break——The load exceeds the original estimate，Ineffective seal、Too small bearing clearance caused by too tight fit。Each of these factors is unique
2015-01-09 Reading quantity 1516
introduction： In order to prolongTIMKENbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Service life，Attention should be paid to bearing rust prevention during use。Commonly usedTIMKENBearing rust prevention methods are： 1）Surface cleaning：Cleaning must be based onTIMKENThe nature of the bearing and the conditions at the time，Select the appropriate method
2015-01-09 Reading quantity 1487
introduction：summarize Different principles and structural forms of forging hammer developed by using modern electrohydraulic hammer technology are discussed，It reflects the innovation of electrohydraulic hammer technology，Show the future development direction of electrohydraulic hammer technology。 Traditional steaming-Air and air forging hammer is the leading product of the forging industry in the early part of the last century。With the rapid development of modern hydraulic technology and electronic control technology，Electrohydraulic hammers gradually developed，In particular, it developed by leaps and bounds in the 1980s。Among them, the liquid-gas electrohydraulic hammer through continuous innovation，Increasingly mature technology。This technique is suitable for free forging，And suitable for die forging，So the technology spread quickly，Have to
2015-01-09 Reading quantity 1530
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