<em id="jdl9l"><b id="jdl9l"></b></em>
          <ins id="jdl9l"></ins>

          <delect id="jdl9l"></delect>

          <ins id="jdl9l"><b id="jdl9l"></b></ins>

            <ins id="jdl9l"></ins>

            <b id="jdl9l"></b>

              <p id="jdl9l"></p>

              CN EN

              Industry News

              Current : HOME > NEWS > Industry News

              Repair and Damage Causes of Hydraulic Pumps and Piston Pumps

              2018-03-16 13:34:06 Click:524
              After the hydraulic pump plunger pump is used for a certain period of time, the parts therein will gradually wear out and be damaged, which will result in the reduction of the pump's movement accuracy and work performance. The hydraulic pressure will not rise, the oil supply will decrease, the noise will increase, and the vibration will increase. And other abnormal phenomena. These phenomena are often the symptoms of worn or damaged parts of the pressure pump.

                  When using a hydraulic pump on a daily basis, if people have the knowledge about how to install, use oil, and remove operating faults, how to perform maintenance and service knowledge, it can greatly delay the wear of hydraulic pump parts or avoid damage.

                  Once the parts of the hydraulic pump are worn and exceed the allowable deviation, they must be repaired in time to be restored (or replaced) so that the hydraulic pump can regain the required accuracy and performance. Under certain circumstances, skilled operators can even improve the working performance of the hydraulic pump through excellent repair and assembly techniques.

                  Reason for hydraulic pump damage

                  There are various reasons for the damage of the hydraulic pump, but there are mainly the following two kinds of reasons.

                  (a) Wear

                  The wear of hydraulic pump parts, like any part of equipment, is an inevitable result of mechanical operation. Under normal conditions of use (ie, observance of the pump's operating procedures and maintenance regulations), gradual wear due to long-term effects such as friction and chemical reactions is natural wear. This kind of wear cannot be eliminated and avoided, but through careful maintenance and proper use of the pump, the wear rate can be reduced and the wear cycle can be extended.

                  The causes and phenomena of wear are mainly the following:

                  Friction wear

                  After the parts are manufactured, the surface is carefully observed with a magnifying glass, which is always uneven. After the wear of the hydraulic pump, the metal particles are detached from the surface of the parts. The unevenness of the surface of the parts is relatively flat, and the friction is continued afterwards. It will produce a deep scratch or a small size, this wear is a normal natural friction wear. Also known as abrasive wear.

                  2. Abrasive wear

                  Due to the presence of solid particulate contaminants on the mating surface of the parts, according to the analysis of oil contaminants for hydraulic pumps, more than 20% of the contaminant particles in the pump are silica and metal oxides. These wears are the most serious components of pump parts wear. They are clamped on the surface of the middle of the moving parts. When they move, they are equivalent to the action of abrasive sand and produce severe abrasive wear.

                  3 pit wear

                  This is a hydraulic element for fatigue damage. Under the action of alternating load, due to the periodic compression and deformation, residual stress and metal fatigue phenomena are generated. As a result, tiny cracks are generated on the parts, resulting in the gradual flaking of small pieces and small pieces on the surface of the parts.

                  4. Corrosive wear

                  The surface of the hydraulic pump element is exposed to the erosion of acids, moisture and other corrosive substances in the oil, and the metal surface gradually causes damage.

                  The above-mentioned several abrasive particles will continue to fall between the two moving parts, which will increase the wear of the shallow surface. According to the test, the maximum wear of the swash plate type plunger pump occurs in the abrasive wear of solid particles of 5 to 10 μm, which causes a significant drop in the hydraulic pump volume due to the abrasive particles of 40 to 60 solid particles. Wear. The reason is that the latter on the sliding surface wear uneven, especially the oil pan at the partition and the cylinder. Off the cylinder and the plug of the local stalls, although the amount of friction is not large, but the hydraulic pump oil f significant decline. Although the former has the largest amount of wear, it wears evenly, and it can still keep the sliding surface, such as the oil distribution surface, with little clearance. Therefore, the amount of leakage is small. Abrasive grains are viciously worn in large and small places. Therefore, the wear and tear of large and small particles must be noticed at the same time, and be reduced and improved.

                  (b) accidents

                  Violation of the hydraulic pump operating procedures and maintenance regulations, causing serious overload, over-speed, and even the pump components have been loose and advised to fall off, still forced to start, or reinstall after reinstall, tools and other foreign objects fall into the pump and other reasons The resulting hydraulic pump parts are damaged.

              乱人伦中文无码视频|亚洲日韩制服丝袜中文字幕|国产无码小电影在线免费|亚洲va国产日韩欧美精品

                <em id="jdl9l"><b id="jdl9l"></b></em>
                      <ins id="jdl9l"></ins>

                      <delect id="jdl9l"></delect>

                      <ins id="jdl9l"><b id="jdl9l"></b></ins>

                        <ins id="jdl9l"></ins>

                        <b id="jdl9l"></b>

                          <p id="jdl9l"></p>