Perencanaan Produk Fakultas Program Stud

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MODUL PERKULIAHAN

Perencanaa

n Produk

Kajian Paten

Fakultas Program Studi Tatap Muka Kode MK Disusun Oleh

Teknik Teknik Mesin

04

13039 Darwin Sebayang Mohd. Fahrul bin Hasan

Abstract

Kompetensi

Modul ini berisi contah kajian paten

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Kajian Paten

1. Pendahuluan

2. Review of Available Patented Apparatus in the Market

The several of manufacturing methods and apparatus on the previous patents are reviewed and summarized in the following section. The revision are consists of method used, background of the invention and manufacturing processes.

2.1 Apparatus for Producing a Honeycomb Body (Park, Moon & Kim, 2004)

The apparatus of this invention is producing a honeycomb body, which can produce precise dimensions to insert into a metal outer shell accurately. The spiral shaped honeycomb body is made by folding a flat and corrugated sheet metal into a roll. The invention is to prevent a separating between the honeycomb body and the metal outer shell if the outer diameter of the honeycomb body is less than the inner diameter of the metal outer shell. On the other hand, if the outer diameter of the honeycomb body is larger than the inner diameter of the metal outer shell, it is impossible to insert without damaging the shape of honeycomb body. The apparatus includes a roll part for supplying a thin metal flat sheet via several rolls, a part for measuring the length of the flat sheet metal, a part for supplying a corrugated sheet metal via several rolls, a winding roll of a honeycomb body which is made by folding the overlapping flat and corrugated sheet metal into a roll, a part for measuring the rotation angle of winding roll and a control part which controls the amount of winding in a roll of a honeycomb body. Figure 2.3 illustrates an apparatus for producing a honeycomb body.

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2.2 Methods for Manufacturing by Heat Treatment of Metals (Solntsev

et al.,

2000)

The invention relates to monolithic metal oxide structures made from metals and

methods for manufacturing the spiral catalyst substrate by heat treatment of metals.

This method was attempt to manufacture because of there is a need for metal oxide

structures which are of high strength, efficiently and inexpensively manufactured in

environment benign processes. There also is a need for metal oxide structures which

are capable of providing refractory characteristics such as are required in demanding

temperature and chemical environment and having a variety of shapes and wall

thicknesses.

The manufacturing process of this method is starting with the disk comprises

a first flat sheet of steel adjacent a second corrugated sheet of steel, forming a

triangular cell (mesh), which are rolled together to form a disk of suitable diameter.

Then, the metal containing spiral structures were heated to a temperature below the

melting point of metal to form a monolithic metal oxide structure having substantially

the same shape. Figure 2.4 shows the drawings of the invention.

Figure 2.4: (a) is a side view of an assembly suitable for processing metal structures

according to process of the invention; (b) is a plan view of an exemplary metal

structure shaped [Solntsev

et al.,

2000].

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2.3 Multi-point Welding Method (Matsuo

et al.

,1995)

The invention relates to a method of welding multi-points to be welded for a short

time for producing a spiral catalyst substrate. In the catalyst structure, the flat sheet

metal needs to be welded to the corrugated sheet metal for preventing separation of

layers. This method also provide a multi-point welding method wherein multi-points

to be welded are certainly welded for a short time.

An alternately laminating a flat and corrugated sheet metal were formed into

approximately cylindrical base body as a beginning of manufacturing process of this

method. Then, the laminating of a sheet metal is wound in a spiral shape. An

electrode apart is mounted from one end surface of the base body. Finally, the

electric discharges are generated to fuse and join the contact points of the flat sheet

to the corrugated sheet. Figure 2.5 shows the drawings of multi-point welding

method.

Figure 2.5: (a) is an explanatory view showing a forming process of flat and

corrugated sheet metal; (b) is an explanatory view showing a welding process by

electric discharges [Matsuo

et al.

,1995].

2.4 Apparatus for Shaping a Spiral Catalyst Support (Retallick, 1987)

The spiral structure is simple to build, but it has suffered from a major disadvantage

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the spiral structure telescope outwardly, due to the pulsating exhaust of the

automobile. Therefore, the apparatus for shaping a spiral catalyst support was

invented to solve this problem, which the invention able to prevents telescoping of

the layers of the spiral catalyst support so that the invention does not require brazing

of the sheet metal.

The catalyst support is made by first winding a flat and corrugated metal strips

to form a spiral shaped structure. Then, the strips are wound together on a mandrel,

which is removed after the winding to leave an axial hole. The structure after being

inserted into a cylindrical tube is flattened at each end and to provide a continuously

tapered catalyst support. Finally, the tapers in the support insure that the layers of

the spiral cannot telescope outwardly in either direction. Figure 2.6 shows the

drawings of the invention.

Figure 2.6: (a) is an end view of a metal catalyst support before it has been flattened,

also showing the layers in fragmentary form; (b) is a side view of the apparatus used

in the method of making the catalyst support of the invention [Retallick, 1987].

2.5 Spiral Catalyst Substrate Produced by the Previous Inventions

The manufacturing processes of spiral catalyst substrate on the previous inventions

which had discussed above are compared according to the material and geometries

of the spiral catalyst substrate and are summarized as in Table 2.1.

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Table 2.1: Review of catalyst substrate produced by the previous patented

2.6 The Advantages and Disadvantages of the Previous Inventions

The patents have advantages and disadvantages of their invention which can be

seen the summarization in Table 2.2. From these summaries, the process can be

easily understood in order to recognize the gap in the literature.

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Table 2.2: Review of patented apparatus and methods of manufacturing a spiral catalyst substrate

1. Presented a new apparatus for producing a catalyst substrate.

2. Can produce precise dimensions for accurately inserting the substrate into a metal outer shell.

3. Can supplying a several rolls of flat and corrugated sheet metal.

4.Have a control part for measuring the length of the sheet metal and rotational angle of winding roll.

1. The process does not considering the formability of metal.

2. The invention is not specified the geometry of spiral catalyst substrate.

1. Introduced a new method for metal oxide structures for manufacturing the structures.

2. Provide a metal which are capable to operate in demanding temperature and chemical environments.

1. The manufacturing process does not include a simulation phase.

2. The method does not show the invention functionality.

3. The process is complicated to understand.

1. The invention provides a new technique, multi-point welding method.

2. Capable to weld a flat sheet with a corrugated sheet for a short time.

2. The process does not

considering the formability of

1. Capable to prevent telescoping of the layers of a spiral catalyst substrate.

2. Does not require brazing of the metal. Any types of metal materials.

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NOMENCLATURE

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CFD Computational Fluid Dynamics

CO carbon monoxide

CO2 carbon dioxide

FeCrAl ferum chromium aluminium

HC hydrocarbon

NOx nitrogen oxide

O2 oxygen

OSC oxygen storage capacity

Pd paladium