Questions fly around the room, and suddenly this meeting starts to sound like the previous week’s meeting. Toggle navigation. Not all steel plants produce all of the products shown in this diagram. This is called a day-by-order chart (see Figure 5). From Sheet Assembly to Quote quickly and seamlessly. After glancing at a visual device, managers should know the current state of a process. If no one sees them, they can’t help people manage flow or identify problems with that flow. The hourly volume is documented on the chart, and any deviation from the target volume can be identified and addressed, hourly. worldsteel.org OVERVIEW OF THE STEELMAKING PROCESS Pellets Sinter Limestone The ideation stage can be as creative or as standard as the client desires. TITLE of ELEMENT Fabrication Procedure WORK INSTRUCTION 12-15-2010 Revision: 121510 Initial Trial Page 2 of 3 9.0 INSTRUCTIONS 9.1 (List all steps to be taken to complete the scope of this work instruction, in the exact sequence necessary. virtually every metal fabrication process in industrial applications. It is a straightforward definition of how we want our shops to operate. Perhaps, this inadequate infrastructure for fabrication is unable to support a large growth of steel construction. Fabricators & Manufacturers Association, Intl. Hiding these documents in a binder makes them ineffective. Simple lines and signs help answer questions like “Where does this completed order go after plasma cutting?” and “Where is the steel for my next order?” A rookie fabricator looks for a line and a sign, and he knows immediately where to place a finished job and where to retrieve raw stock for the next order. PHONE: (86)0372-5368538. Visual management allows everyone to see flow where the flow of product cannot easily be seen. Advanced Bill of Material 24 2. Of course, if the standard work isn’t posted and communicated effectively, people will deviate from it, and inefficiencies will ensue. The stack lights on equipment communicate machine status and change color when the machine is in a given state, such as a breakdown. Similarly, operators must learn the best current practice of performing a task and adhere to that practice to be most efficient at their job. Academia.edu is a platform for academics to share research papers. Photo courtesy of Getty Images. Say you have a press brake operation that has a high mix of products, with volumes high or low, and yet the size of parts does not vary greatly from one order to the next. Of course, for this to work well, both production and material management departments need to operate within that visual management. Both operators and leaders may set a given volume of parts to be produced each hour as a target to meet the schedule. Controls limit actions or responses. But is that really the case? Sheet metal fabrication processes can mostly be placed into two categories - forming and cutting. For production, the necessary visual devices help people on the floor manage flow. In recent times the inspection and test activities have been transferred into the production departments of organizations, sometimes retaining the labels and sometimes reverting to the inspection and test labels. This would result in equal volumes of parts required per day, much like a mass production manufacturer. Work instructions may be in the form of flow charts, bullet Visual management helps everyone see the flow. Sign up and be the first to know about the latest industry news, products, and events! To best meet the production schedule, fabricators must manage the process and not the schedule. When that happens, operators and leaders together can identify this immediately and team up to correct the abnormality. The actual time then can be compared with the estimated time. These devices come in three general categories: indicators, signals, and controls. In this scenario, scheduling could require 5 orders for Monday, 10 orders for Tuesday, 8 orders for Wednesday, and so on. Regardless, whether you have a high-volume, low-mix or low-volume, high-mix shop, visual management should define the designated areas for storing and transferring material. In doing so, the “public interface” has been lost, and much-needed information to manage operations has become invisible to those who need it most. Unlike the previous example, the visual management system should monitor the progress of the operation by each order, not time. Of course, people need to look for and see the visual indicators to receive their message. Visual indicators are static and can be as simple as lines on the floor, showing everyone where certain work should be placed. Forming processes are those in which the applied force causes the material to plastically deform, but not to fail. “When will the order ship?” “What orders will need to be pushed out?” “How long was the equipment down?” “I thought we already fixed that machine!” “Why did they not catch the defect earlier?” “Where are we at with the order now?”, Once people answer these questions, or in some cases simply assure their supervisor that they will get back with an answer, the solution soon follows: “The [insert name] department will need to work overtime this week to catch up.”. This day-by-hour production chart documents volume by hour and records any deviations from the target volume. Figure 2 In this case, maybe the fabricator was fortunate enough to group together like parts or parts with very close cycle times so they can be produced in the same operation or setup. For instance, painted lines on a floor are a visual indicator. Check the seamless steel pipe and welded steel pipe production process flow charts of below, steel plate and coil production process flow chart is also shown here! Photo courtesy of Tim Heston. Quite often these documents are written for quality systems and not for the benefit of managing the operation, outside of training.

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