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TH154 the Lishi sclerometer

TH154 the Lishi sclerometer TH154 Lishi sclerometer is one kind of new pocket integration degree of hardness measuring instrument, is mainly suitable for test metallic material degree of hardness, has the test precision to be high, the volume is small, the operation easy, to carry conveniently, the measuring range wide characteristic, it is take the Lishi degree of hardness as the principle, determines Lishi ( HL) degree of hardness value changes into cloth after the procedure automatic extension, Luo river, Uygur, degree of hardness values and so on Xiao, but may also dispose each kind of test fitting, satisfies each kind of test condition and the environment, is mainly suitable for the metallic material fast degree of hardness test, is suitable specially to the large-scale spare part and not dismantable Scene degree of hardness test. The TH154 integration Lishi Brinell Hardness Tester Leeb Hardness tester PHL200 sclerometer is one kind of advanced compact size degree of hardness instrumentation, carries the convenience to be easy; TH154 has the DL impact installment; The direct test large-scale, the heavy test sample or has installed the permanent assembly part; TH152 more suitable trench tank bottom or profile (for example tooth face) and so on components degree of hardness surveys; May test six kind of degree of hardness systems (HV, HRC, HRB, HB, HV, HS); But external connection printer, printing test result; Owes the electricity instruction and the automatic close-down function English contact surface, the back light demonstration

posted by fuland3 on Jun 11, 2008 9:07 AM | 0 comments
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Rolling generally composed of four basic components

Rolling general of the following four basic components: the inner ring and outer ring, Cage and rolling in - or the heart to heart to the thrust bearing (inner loop or outer ring can be collectively known as the Ring), the axis circle seat , Cage and rolling in - or the thrust bearing thrust to the heart (or axis lap seat can be collectively referred to as washers). Rolling is a rolling of the basic structure of a small number of species of rolling bearings in order to save space location, in order to load or more of rolling, you can not take the outer ring or inner circle, without, the outer ring, or without Cage , But all must have a rolling Rolling body. Inner Circle is usually installed in the shaft or axis, the outer ring or seat installed in the hole housings, and the rolling of the assembly, the outer ring or shaft, between the seat. The load through the rolling axis of the inner ring or ring-out circle or seat, or outer ring or seat-axis to the inner ring or circle, the two sides through the rolling of achieving relative rotation. Cage used to rolling-off, in order to avoid rolling of mutual contacts, because direct contact with the rolling of the relative speed alone is generally rolling in a rolling speed of the times, this will lead to rolling of the abrasion. Rolling the strengths and weaknesses and most of the existence of the rolling, for example, by rolling in a rolling friction, static and dynamic friction coefficient low drive high efficiency, small size axial, and the other a high of contact ( "point" Contact or "line" contact), making the rolling bearing stiffness, vibration, noise, and other than the quality of certain types of plain bearings, radial size larger.www.blogmyway.org/?w= fuyou123 www.teenblog.org/ fuyou123/

posted by fuland3 on May 31, 2008 9:59 AM | 0 comments
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TH110 portable Richter hardness tester

Machine Tool, automobile chassis testing the hardness

Installed machinery or permanent assembly of components

Mold cavity is very narrow space, such as testing the workpiece

Large parts of the large number of measurement sites in the rapid test

Pressure vessel, turbine generator and other equipment failure analysis

Bearings and other parts production lines

Metallic materials storage of material distinction

Parts of the quality control of heat treatment

Requested the test results of the informal protocol

posted by fuland3 on May 28, 2008 11:09 AM | 0 comments
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SKF Airlines Rolling Bearing Technology(7)

However, with greater toughness of steel crack growth can be slowed down the pace. The third stage, the rapid expansion of crack. When the crack reach this stage, bearing soon will expire. 3. Surface treatment based on fracture toughness and other materials crack and the relationship between the development of research and analysis, we can easily see the value in dn high stress and there is the circle of circumstances, the high-speed steel surface treatment and low carbon content of the High-speed steel hardening the surface of the depth of change is of great significance. To that end, SKF developed surface treatment process, to enhance the surface hardness, and produce stress. The surface of the material has the following characteristics: a better anti-fatigue cracks, the second phase, the crack growth rate has been low and inadequate or hardening of low carbon content of the core led to the fracture toughness of the material, and other high value . SKF development Ball Bearing of such a surface treatment processing methods include: (1) using lasers, electron beams or induction quenching methods such as hardening of the general shortage of local high-speed steel heat treatment to be hardened surface layer. It should be noted that the shortage is to increase quenching fracture toughness. (2) to use chemical heat treatment method hardened surface layer. Such methods include carbon or nitrogen will penetrate into the ordinary high-speed steel microstructure, or small degree of change in carbon content. In short, SKF considered for the next generation of aero-engine in the development of new or improved methods of steel heat treatment process, the surface can be dealt with the effects of the considerable benefits. It can be said that if the heat treatment means that the development of the microstructure and mechanical properties of the people once they are in total control, hardenability steel and high speed steel in the aero-engine bearings will be fully utilized.

posted by fuland3 on May 28, 2008 11:07 AM | 0 comments
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Bearing industries to foreign Glance (4.6)

While there is little direct bearing, but in modern life, through travel, boats, aircraft, the use of perturbation, video recorders, washing machines, computers, will use indirect bearing, even in the luxurious hook Yugan also equipped with sophisticated as jewelry The micro-bearings. In the world, people's energy use, improve efficiency and protection of the environment made more and more close to the harsh demands, which requires continuous development of various sophisticated, high-tech bearing the new varieties, adapt to the energy, resources Environmental protection, high-tech aspects of development needs. For example, roller bearings production, is now used more hardenability or hardening of the alloy surface carburizing network, the future requirements of the material is perfect, some bearings need to use rust-proof, heat-resistant materials, including ceramic materials. In the steel smelting process, will promote the adoption of VIM (vacuum melting), VAR (Vacuum Arc), PAM (plasma arc) and EBM, and other new technologies, as well as Ball Screw China Bearing cathodic vacuum plating Satin, ion plating, and other new technologies, new processes, bearing Steel purity higher, better performance. Bearing more applications will be extended, such as linear motion bearings, ball screws, fluid static bearings, fluid dynamic bearing, magnetic bearings, ultra-thin wall bearing, super-fast, ultra-high temperature, ultra-low temperature bearings, and so on will play in the updated space power . Looking at the future development trend of bearings, will tend to be convenient high-speed, small size, high accuracy, light-weight unit, no special maintenance and resistant to environmental performance. 2, the scale of production of large, international, the Group of the international market because of fierce competition, the survival of the fittest, some bearing the company through the reorganization will divide and reorganization of a number of new super large group of new and stronger Transnational Corporation.

posted by fuland3 on May 22, 2008 10:19 AM | 0 comments
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Bearing the classification and application(6)

Is conducive to the compact mechanical design are only used needle roller and cage component, and the shaft and the installation of the shell as a raceway to the surface using a Cage: keep punching plate, synthetic resin cage forming the main purposes: Automotive , Deep Groove Ball Bearing Work machines, machine tools, such as the transmission device thrust tapered roller bearing with a round of such Taiwan-bearing roller (Daduan for spherical), Roller Raceway laps from the (axis lap, seat) Ribs accurately guide the design makes Axis laps and seat raceway and roller-rolling surface of the apex of the cone-bearing intersection in the center line of one-way bearings that can withstand a one-way axial loads, two-way bearings affordable two-way axial load bearing will be in two-way Circle and shaft meet, but due to space cooperation with bushings must be in the ring, such as the application of the main axial positioning Cage: copper alloy cutting system Cage main purposes: one-way: crane hook, oil drilling rig to the two-way ring : Rolling mill roll neck thrust-aligning roller bearings in such spherical roller bearings are inclined, because seat RacewayZWZ Bearing Ball Bearing spherical, with aligning performance, may allow a number of axis tilt axial load capacity is very large, Axial load to bear at the same time may also bear some radial load at the general use of lubricating oil used mainly to the Cage: copper alloy cutting system Cage main purposes: hydroelectric power machines, vertical motor, ship with the propeller shaft, Rolling Mill Screw system with reducer, tower cranes, grind coal, extrusion, molding machine

posted by fuland3 on May 19, 2008 8:41 AM | 0 comments
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Rolling the common terms and definitions (other5)

Margin flange width flange width of the gap between the two ends. 10. Flange high flange height of the radial flange size. The flange is the height of the outer surface and the flange of radial distance between the surface. 11. Stopper ring groove diameter snap ring groove

diameter only moving part of the trough of the diameter cylindrical surface 12. stopper ring groove width snap ring groove width stopper ring groove at both ends of the axial distance. 13. Stopper ring groove depth snap ring groove depth only moving part of the cylindrical tank, cylindrical surface and surface between

The radial distance. 14. Aligning surface radius of aligning surface radius aligning seat, aligning Block, gaskets, aligning outer ring or aligning the seat of the spherical surface of the radius of curvature. 15. Aligning surface height centre sligning surface centre height thrust axis

By aligning the seat of the spherical shape of the curvature of the back of the Centre and the relative lap axis between the back of the axial distance. (D) of sub-components, parts and components the size of 1. Diameter ball diameter ball with the ball tangent to the surface of the two parallel distance between the plane. 2. Roller diameter roller China Bearing Review diameter

In roller axis perpendicular to the plane of the (radial plane), and roller tangent to the surface parallel to each other as the distance between the two tangent. Rated load calculation, the application of radial roller central plane. 3. Roller roller length include the length of roller end, the two radial

The distance between the plane. However, in the calculation of the rated load with the "roller length" is a roller self aligning ball bearing and Raceway in the shortest possible contact with the theoretical maximum length of exposure. 4. Ball Festival Circle Group diameter pitch diameter of ball set the ball bearings, a core component of the diameter of the circle. 5. Roller

The sub-group of circle diameter pitch diameter of roller set within a bearing roller in the middle of roller axis line running through the circle's diameter. 6. Balls group diameter (diameter) ball set bore diam  deep groove ball bearings

posted by fuland3 on May 15, 2008 5:02 AM | 0 comments
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Bearing friction reduction of the plating process outlined i...

But when the role of cathode polarization over a certain range, the precipitation will lead to a lot of hydrogen, so that coating has become porous and rough, loose, burned, or even powder form, instead of declining quality. Additive free fluoride content and boric acid content is too high or too low when the main concentration, the coating will have serious shortcomings. 4.2.7 the impact of temperature with increasing temperature, bath in the composition of the dissolution of the increase in the concentration of the desirable limit. DK which is conducive to the increase, thereby speed up the deposition rate. However, the temperature too high too quickly dissolved anode, anode slime increased so that the solution turbidity, coating nodulation. At the same time free fluoride boric acid, volatile organic stability agent to speed up, smell increasing deterioration of the environment. The temperature is too low free-boric acid precipitation, bath muddy, rough plating; Meanwhile DK or not to effect deposition slow, low production efficiency. 5 testing process used L9 (34) orthogonal test identified in the bath [Pb2 +], free [HBF4], free [H3BO3] DK and technical parameters of the best value. 5.1 anode composition test conditions: PbSn10; Temperature: 20 ~ 25 ℃; power: three-phase full-wave silicon rectifying; specimen geometry: 100 × 50 × 4; specimens lining (was plated base) the composition: CuPb22Sn2 ; Specimens lining the surface roughness: Ra0.4.

posted by fuland3 on May 9, 2008 9:40 AM | 0 comments
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Rolling the common terms and definitions (other1)

Bearing configuration and sub-components: (a) a bearing arrangements. Paired paired mounting installation of two sets of roller bearing the face of end-to-installed on the same axis as a way to install, work can be considered as a whole. Bearing can be back-to-back, face-to-face or a series of installation 2. Portfolio installed stack mounting three or more of the rolling bearing the face of end-to-installed on the same axis as a way to install, work can be considered as a whole. 3. Back-to-back configuration back-to-bacd arrangement of the two sets of roller bearing outer ring adjacent to the back of the back of the installation methods. 4. Face-to-face configuration face-to-face arrangement of the two sets of roller bearing outer ring adjacent to the front in front of the installation methods. 5. Tandem configuration tandem arrangement of two or more of a roller bearing outer ring bearing on the reverse side of the outer ring and a set of bearings in front of the relative installation methods. 6. Matched pair by pair to set features (usually on to load or clearance) or the selection of the two sets of roller bearing manufacturer, and provided with the installation method. 7. Group will be matched stack with three or more according to the rolling bearing the characteristics normally to load or clearance selection or manufacture, install and provides methods together. (B) of sub-components

posted by fuland3 on May 7, 2008 10:34 AM | 0 comments
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