Category: Manufacturing Technology knowledge

1、 Production workshop The layout of the production workshop focuses on two aspects: under the condition of meeting the production demand, optimize the layout according to the production process, and meet the requirements of flexible energy use under specific production conditions. 1. Power supply, while meeting the power demand for stable production, has appropriate margin, so as not to cause excessive non functional consumption due to excessive surplus. 2. Build efficient cooling water circulation facilities and equip the cooling water system with an effective insulation and thermal insulation system. 3. Optimize the overall production layout of the workshop. Many production…

Heat treatment is a process to artificially change the internal structure and structure of a metal or alloy by means of a certain thermal action (sometimes combined with mechanical, chemical or other actions), so as to obtain the required properties. The main functions and purposes of heat treatment in the production process of metal materials and products are as follows: 1. Improve process performance and ensure smooth process; 2. Improve the use performance and give full play to the potential of materials. 1、 Essence of Metal Heat Treatment In the production process of various metal materials and products, in order…

Figure 1 shows the structural diagram of U-shaped bending piece, which is made of 3mm thick 60Si2MnA spring steel. Due to the functional requirements, the bent arms are required to be perpendicular to the bottom plane, and the perpendicularity is required to be 0.1mm φ The 10H10 hole is coaxial. Fig. 1 Structural Diagram of Parts Process analysis and scheme determination The shape of the part is not complicated, and the shape is U-shaped structure. It is only a composite part of blanking and bending, with 2 parts φ 10H10 hole is of ten grade accuracy, which can be ensured…

1、 Cause Analysis and Countermeasures of Rough and Medium Rolling Area Accidents 1. Steel stacking between racks after the rolled piece is bitten Failure cause: (1) The rolling speed and roll diameter are set incorrectly; (2) The tension setting after roll (groove) change is too small; (3) The steel temperature fluctuates too much; (4) The roll breaks suddenly; (5) The motor of a rolling mill suddenly speeds up or slows down due to the electric control system. Treatment measures: (1) Accurately set the rolling speed, roll diameter and tension; (2) Hold the temperature and wait for rolling, and notify the…

The manufacturing cell of a machine is a part, which is connected to form a machine through a certain form. And one of the connection forms between parts is screw connection, therefore, screw is often one of the most common structures on parts. The common methods for machining thread include turning, tapping and rolling, and tapping is the most widely used internal thread processing method. Especially for small size internal threads, tapping is almost the only processing method. There are generally two methods of tapping threads, namely, hand tapping and machine tapping. In order to facilitate thread processing, the following…

In recent ten years, the process operation of the blast furnace has changed greatly, especially the promotion of the coal injection process, but there is almost no change in the charge. Although there are some new methods to control the burden distribution, the actual burden is still composed of lump ore, sinter, pellets, coke and a small amount of flux. This article will explore the idea of using scrap steel cut into pieces as furnace charge. There are many possible advantages of adding scrap blocks to blast furnace burden. As the scrap is a fully reduced metal, it only needs…

Performance of tool breakage 1) Slight chipping of cutting edge When the structure, hardness and allowance of the workpiece material are uneven, and the front angle is too large, which leads to the low strength of the cutting edge, the insufficient rigidity of the process system generates vibration, or intermittent cutting, and the grinding quality is poor, the cutting edge is prone to micro collapse, that is, there is a small collapse, notch or peeling in the edge area. In this case, the tool will lose some of its cutting ability, but it can continue to work. During continuous cutting,…

A new process of induction heat treatment for crankshaft is introduced, which is different from the conventional process and does not rotate the crankshaft. Compared with the operation of traditional induction hardening equipment, this paper summarizes the technical advantages of this new static method, namely, saving cost and space. Crankshafts are widely used in internal combustion engines, pumps, compressors, etc., and belong to the most critical type of components, especially for engines with a mass between 15 and 40 kg. At the same time, the same is true for some crankshafts with a mass of more than 700kg (crankshafts for…

NC machining is the most widely used machining method at present, and it is also the basic skill that every machining worker must master. After starting up, workpiece clamping, workpiece touch count, tool preparation and processing parameter setting, the start up processing link is entered. What problems should operators pay attention to in this link? 1. Tool and feed speed Before executing each program, all tools must be carefully checked to ensure that they are consistent with the tools specified in the programming instructions. At the beginning of processing, the feed speed shall be adjusted to the minimum, and the…

Turbocharger is one of the important components of turbocharged diesel engine. It pressurizes the air from the air filter and increases the charge volume to improve the power of diesel. Due to the poor working environment of the supercharger, the supercharger is often replaced frequently due to ring damage and oil leakage. For example, the diesel engine on one T200 bulldozer of our company has replaced five turbochargers within one year, which makes the spare parts cost of the turbocharger alone for the bulldozer throughout the year reach 15,000 yuan. Because the cumulative downtime for replacing the turbocharger is 10…