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introduction：Gravure printing machine quality Choose high quality machines，After the purchase of equipment, production is carried out smoothly，It is of great significance to achieve the intended purpose。In order to ensure the purchase of high quality gravure printing machine，To comprehensively examine the comprehensive strength of gravure printing machine manufacturers，Including key parts processing strength、Overall quality of staff(Especially assembly level)And factory inspection level。Investigate whether gravure equipment manufacturers have considerable processing strength，Because the printing press is non-standard equipment，Only by controlling the production quality of key components can we ensure the quality of the whole machine。Packaging and printing manufacturers should fully communicate with gravure manufacturers，Listen to the manufacturers design philosophy，Clear seal
2015-02-05 Reading quantity 2948
introduction：ziyou huosai yasuoji Free piston compressor free-piston compressor The heat energy of fuel combustion in the power cylinder is transferred directly to the compressed gas through the piston，Reciprocating compressor to increase its pressure。Free piston compressors are mainly in construction、Used as a mobile compressor station in the mining and Marine industries，Compressed air for power supply。 Types Free piston compressors are divided into two basic types according to the method by which the piston returns to internal dead center。The first type has a special buffer cylinder，Compress in this cylinder
2015-02-05 Reading quantity 2796
introduction： Most die casting dies are complex in design，High cost，Therefore, the mold is also required to have a long service life。In the production cost of the complete set of die casting mold, the cost of materials and heat treatment only accounts for10-15%，However, it has a decisive impact on the overall life of the mold。 Generally speaking，There are three most common types of hot work die steels in the European die casting industry： ◆H11(1.2343)，This material combines the two characteristics of high hardness and high toughness，Meet many requirements of hot work die steel； ◆ H13(1
2015-02-05 Reading quantity 2794
introduction：The purchase of electric forklifts is difficult 1、Narrow channel forklift for use with elevated storage；advantage：The height of cargo stacking can exceed 10 meters，And can achieve any shelf fork and pick goods，Good space utilization shortcoming：The investment costs are high。 2、Drive-in shelves are often used with forward lift trucks or small tonnage counterweight forklifts；advantage：High stacking density，Good space utilization shortcoming：It is not possible to fork the goods at any shelf position； 3、Traditional heavy duty rack with counterweight forklift；advantage：Can be
2015-02-05 Reading quantity 2885
introduction：Quality problems of forgings may occur in forging production，Reaction in heat treatment、During machining or use，It may be caused by negligence or improper process in a certain production link，It can also be caused by improper design and material selection，Sometimes it may also be due to improper use and maintenance。Defects and damage caused by mechanical parts made from forging during use，In addition to the need to find out whether the forging itself caused by quality problems，It is also necessary to figure out the force conditions of the use of parts、The working part and the environment, and whether the use and maintenance are proper，Only in the exclusion of part design、Select materials、Heat treatment、machine
2015-02-05 Reading quantity 1468
introduction：The difference between the accuracy and economic accuracy of thread parameters Is there a difference between the accuracy and the economic accuracy of the thread parameters？ The parameters of the parts have the concepts of precision and economic precision，Thread as a part，Its parameters naturally also have the concept of precision and economic precision。Make clear the difference between the accuracy and economic accuracy of specific thread parameters，Know which parameter is in the standard“precision”The meaning of，Which parameter is“Economic accuracy”The meaning of，To understand the existing problems of thread accuracy，Through design improvements，Effectively improve the accuracy of thread，Produce a variety of“High precision thread”，ponderability
2015-02-05 Reading quantity 2909
introduction：Numerical control machine tool is the product of the combination of information technology and mechanical manufacturing technology，It represents the technical level and development trend of modern basic machinery。In recent years，Chinas CNC machine tool industry is developing rapidly，At present, there are nearly 100 CNC machine tool manufacturers。In order to speed up the development of Chinas CNC machine tool industry，To better meet the needs of national economic development，The state is formulating and issuing《Outline for the revitalization of machinery industry》China has listed important basic machinery as one of the four key areas of revitalization，The important basic machinery is mainly the development of CNC machine tools。“The ninth Five-Year Plan”and2010Years ago, Chinas CNC machine tool development policy is：Focus on the six types of hosts（Numerical control machine
2015-02-05 Reading quantity 2806
introduction：sequence mark quasi No. mark quasi The name According to 001 JB/T 7445.1-1994 Special machining machine speciation 002 JB/T 7445.2-1998 Special machining machine Type preparation method 003 GB/T 14896.1-1994 Special machining machine terminology Basic term 004 GB/T 14896.2-
2015-02-05 Reading quantity 2853
introduction： Construction list of hollow grouting bolt Milepost number Support type Support length（meter） remark ZK91+641-ZK91+73
2015-02-05 Reading quantity 1486
introduction： A part of a boiler or industrial furnace where solid fuel is stored and burned efficiently。The whole grate mainly includes two parts: frame and grate plate。Grate plates are usually made of cast iron﹐Maintain the necessary ventilation gaps between the assembled pieces﹐And often also set under the grate can adjust the air volume of the divided ventilation chamber﹐So that air can enter the fuel layer through the gap and burn。The burnt ash is discharged manually or mechanically。The grate has a fixed type﹑mobile﹑reciprocating﹑Vibratory type and underfeed type。 Fixed grate Grate plate is generally strip or plate shape﹐It is fixed in the furnace by the surrounding frame
2015-02-05 Reading quantity 2798
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