Remedy steel fatigue damage such technical devices with small size, high frequency fireproof coatings, can be used to facilitate the manufacture and assembly of steel bridges, etc., and therefore worthy of use in the production of steel bridges. Its top most used is tempered T arts, is about the overall component placed in a furnace heated, typically heated to 600 to 800. To overcome the above-mentioned process method and process measures of disadvantage in steel bridges in the development of a device known as a high-frequency ultrasonic impact technology. But when there is no input of energy to achieve the appropriate magnitude, reducing residual stress effect is not significant, and therefore, of course, currently used in the high-frequency excitation of the vibrator power supply technology has been very mature, and its small size, the higher frequency But it's the input energy is very low, so this can only be used under mature vibrator laboratory premise structural noise and vibration spectrum analysis. Because the standard of high frequency vibration table is limited, so not only for standard components using this method. In some metal processing and manufacturing, processing and assembly precision because some want more and more advanced components, reducing component residual stress, improve member service life demands more urgent, which has developed a technology called high-speed blasting, the effect is very Obviously, significant progress can be exhausted capacity and resistance to stress corrosion performance and get a wide range of applications. However, the frequency of hand-tap low, the energy input into the structure is limited, so the effect is not obvious. Difficulty of this approach is that, not only the structure of the weld zone in claim vibrator size, but also have to have a sufficient quality and high frequency vibration effect, since the input to the metal structure of the energy with the vibrator 43 actuator The quality and the role of the product is proportional to the square of the frequency. Because the overall average of the heating and cooling process structural deformation, so that the local high residual stress and strain to get loose. For large components, this method requires a large standard high temperature heating apparatus, therefore, can handle standard member heating means restricted actual device. First, the quality of steel works with a variety of raw materials, there will be various modifications, prefabricated steel structure project will appear in a variety of geometries bias. Such as bending, uneven and not perpendicular to the other needs correction, often used to correct engineering heating correction, corrected heating zone members will appear embrittlement scene. Material cutting or welding process the Central Standing Committee member of various complex deformation of steel, such as: twists, such as distortion and warpage. Vertical deviation is too large pillars and capitals elevation below the design elevation. Senior steel works, steel works in the Central Standing Committee appeared column assembly foot plate gap is too large or difficult horn arrangement. Will find layers of column spacing is too large or too small scene, search the top layers of the beam, often find the top ends of the beam elevation inconsistent. Carrying out structural search of acceptance, steel works after installation is complete. Often release axis displacement, vertical deviation is too large pillars and capitals elevation below the design elevation. Senior steel works, but also found the layers column spacing is too large or too small scene steel installation, search the top layers of steel beams companies often find that the top ends of the beam elevation inconsistent. Affect the identity of steel works quality. Second, the steel material issue material is uneven, due to the current market, many manufacturers of steel supply. Material procurement little attention will be material or material failure and various modifications exceeded, transportation of raw materials, stacking and storage process, due to the collision and extrusion, the material appeared various modifications, the most common, such as: steel unyielding , steel and turns, not perpendicular angle or channel, beam flange on the web is not vertical like. These deformations not only to correct the difficult, and some can not even perform corrections, have a serious impact on the quality of construction. Zhongshan Steel steel design _ _ Peng Jian Steel Ltd., Dongguan City, Peng Jian provided by steel. Steel Co., Ltd., Dongguan City, Peng Jian (dgpengjian.cn) strong, credible, in Dongguan, Guangdong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Peng built into the brilliant steel and you work for a better future!