The sectional details of the parts are shown in fig 3 in which the machine shaft is supported by radial and thrust bearings. Radial bearings support the dead load on the shaft, while thrust bearings support the axial load due to compression of saw dust by screw. One end of the shaft is connected to the gear drive. In the other end of the shaft screw is inserted. Starting section of screw placed inside barrel conveys the material into the mould. Mould is made in two sections, first in which the cross section gradually reduced to the final shape of briquette (called forming mould or wear sleeve) and the later with uniform cross section of the final briquette which exerts necessary back pressure for compression due to friction. …show more content…
For the second set of readings the stoppages are preplanned so that screw is removed before it was damaged considerably. The heater is stopped earlier; very fine powder not suitable for briquetting was introduced inside to push the previously formed matter out making the cleaning process easy and short. The system will be started again with the new screw in place and heated to required temperature about 250oC. The average down time in this trial was considerably reduced to 31 minutes. The experimental details are given in table 1. Table 1 Experimental details for Eutectrode 700 coated screw
The same kind of trials are repeated with screws coated with VAUTID 302 which is a tungsten carbide electrode and its coating increased life of screw to more than 10 hrs[10]. The same type of mould with Eutechtrode 700 was used in this trial but replaced along with the second screw replacement. Readings were taken for 4 trials to keep the total duration similar to that of first set. The next set of trials with planned stoppages was also conducted for 4 trials in the similar way and the readings tabulated. The details of the experiment are presented in table 2. Preplanning downtime has shown improvements in the following aspects.
The downtime per setup went down;
productivity has shown improvement;
Even though it was not accounted labor productivity & morale went up significantly.
The production of unacceptable quality briquettes at the last part of
There is several pieces of PPE equipment that must be work whilst milling, equipment is as follows:
The testing mechanics are both well described and displayed in an easy to read table and performed using industry standard instruments. The prescribed
• Steps: - Making mould cavity - Material is first liquefied by properly heating it in a suitable furnace. - Liquid is discharged into a prepared mould cavity - allowed to solidify - product is taken out of the mould cavity, trimmed and made to shape
The marketing study strives to establish the project’s viability and tries to gain an understanding of the different areas surrounding the project itself. It involves the gathering and evaluating of relevant data whether it is desirable to implement a project proposal. These provide an understanding on the charcoal briquettes production by analytical study of its demand- supply relationship, determine its target customers and give an assessment on the cooperative’s competitors. This assessment shall give the proponents the idea on the concept of competitive position in the market and formulate a marketing strategy that will be used for the growth of the organization in gaining an advantage over the key players in the industry.
A material removal process carried out by a milling machine and a cutter. The object stays fixed while the cutter revolves rapidly in order to remove the desired amount of material. Milling is often used to create casts for future parts to be manufactures easily. It is also useful for “fine tuning’ or minor yet precise changes to a pre machined component [1]. The advantage of milling is that it can be done on almost all materials if performed correctly. The disadvantage is that there’s is a lot of wastage of material and the component may require further machining on other machines to be completed.
This is the basic component of the construction. This cylinder is made up of steel and is fitted into ball bearing. There is an extended portion of the cylinder at the top where the projection cylinder is placed. The centre cylinder has the bevel gear fitted on to it to enable power generation using alternator.
As a result of corrosion, manufactured metals and alloys are likely to experience failures such as plant shutdown, loose of products, loose of efficiency, contamination, and effects on safety and reliability [1][7]. Each year, millions of dollars are spent around the world to control the corrosion process and treat it. However, corrosion cannot be prevented completely, but it can be controlled or reduced to an acceptable or very low rate.
The shape and size of crankshaft depends on the number and arrangement of cylinders. It is usually made by steel forging, but some makers use special types of cast-iron such as spheroidal graphitic or nickel alloy castings which are cheaper to produce and have good service life.
cylinder bore closing off the compensating port, see Figure 1 (E). This completely seals the hydraulic system.
As nations continue to expend their energies into expanding infrastructure, developing technology and making key discoveries in healthcare, not enough attention is being spent on protecting what the world has created or constructed already. Historical sites, National Monuments, Key infrastructure and everyday items are constantly under attack from a natural phenomenon known as corrosion. Every year over US $2.2 trillion is spent worldwide in repairing, and protecting components and structures from corrosion. It is important that corrosion is considered in every design process that is undertaken to enable components to operate at the highest efficiency for the longest period of time. This will not only aid in the efficiency but also reduce the economic burden of repairing and maintaining the component in question. An important component that is necessary for global trade is a boat propeller. There are a large number of factors and considerations that must be included into design and fabrication of a boat propeller. These include Environmental conditions, operational conditions, Alloy selection and Maintenance.
This has to operate to fine tolerances and so a precision machining section was established. The section uses the latest and most expensive machine tools available and is manned by highly skilled technicians. The following table shows the percentage of jointing mechanisms which were outside the specified tolerances:
Case hardening crucial for steel components that are subjected to severe or continuous impacts, high temperatures and high pressures. It is a heat treatment process that produces the required attributes of a hard, wear and fatigue resistant surface layer whilst maintaining a tough, durable core that allows for high stress situations. These properties are achieved by altering the chemical, metallurgical and physical properties of the components exterior without affecting its more ductile interior. For gears, case hardening is required to prevent pitting and deformation of the gears teeth under cyclic stresses. This method is preferred to through hardening, which is the uniform hardening of the entire component, as hardened metal is relatively less ductile and although strong, would not offer the same degree of toughness desired at its core.
Planes that run the same direction of the mould opening usually require some draft, which allow milling of the mould. The mould design requires about one
4. The confined heating around the pin soothe the material and conjunction of tool traverse and rotation leads to the motion of material from the front of the pin to the back of the pin. Due to this a joint is developed in solid state.
Shaft is the component for transmitting torque and rotating. It is a main base for the mounting the flywheel, fins and both the drums. it is shown in figure. Shaft is the consists of stainless steel Alloy, nickel Alloy 17-4 PH stainless steel, 410 Stainless steel 416 Stainless Alloy, 316/316L Stainless Steel, Alloy 20 Stainless Steel, 15-5 Stainless Steel 416 Stainless Steel, K500 Nickel Copper Alloy, Nickel & Special Alloys, Duplex 2205 Stainless Steel.