Welding Slag Cleaning Machine
Welding Slag Cleaning Machine
Welding Slag Cleaning Machine
SYNOPSIS
Our project work, Sand slinger Machining (SSM) presents the working of sand
slinger machining and removing materials from the brittle and heat sensitive materials by
the application of high speed stream of abrasive particles carried by a gas medium
through the nozzle. In particular drilling of holes of minimum diameter and maximum
depth is also possible in SSM with greater accuracy and surface finish. Since no heat is
induced while machining the surface, the workplace is not subjected to thermalshocks.
Sand slinger machining apparatus can be used for determining the material removal
rate (MRR) for materials like glass, ceramics and aluminium sheet by varying the
parameters like pressure, nozzle tip distance (NTD) and size of abrasive flow rate. In this
project we have designed and fabricated the Sand slinger machining apparatus for drilling
holes and cutting glass, ceramic plates and aluminium sheet.
INTRODUCTION
Rapid technology development in the field of new materials and alloys with
increasing strength, hardness, toughness, heat resistance and wear resistance have
imposed many problems and difficulties during the machining by conventional means.
Machining intricate and complicated shapes of this and fragile components and
accurate and economical forming of very hard, high strength materials which are being
extensively used in Aeroplane and nuclear industries have forced the scientist, engineers
and technologists to search for new techniques of machining which can readily provide
an effective solution to these problems.
As a research and development for the last forty years several new methods of
machining have emerged. Among the new methods we are going to deal with the Sand
slinger Machining. The conventional techniques like turning, drilling, milling etc., are
well known and involves the use of mechanical power between the workpiece and the
tool whereas in this method need not be the case with unconventional on advanced
machining techniques.
WORKING PRINCIPLE
Sand slinger machining (SSM) removes material through the action of a focussed
stream of abrasive-ladden gas. Micro-abrasive particles are propelled by inert gas at
velocities of upto 300 m/sec. When directed at a workpiecs, the result in erosion can be
used for cutting, etching, cleaning, deburring, polishing, and drilling.
No work piece chatter or vibration occurs with this process because the large
enables SSM to produce fine, intricate detail extremely brittle objects. The SSM
processed eggshell provides a graphic example of the delicate nature of the process. In
addition because heat carried away by the abrasive propellant gas, workpieces experience
no thermal damage.
APPLICATIONS
The manufacturer prepares a reusable rubber stencil for each model panel. The
rubber stencil is then placed on the surface of the panel and the sand slinger is used to
etch the exposed areas providing permanent marking. In this particular use, the Sand
slinger Machining (SSM) costs only 1/3 of cost required for label method of production.
1. SSM provides cool cutting action, no heat damage occurs to the delicate work
materials.
2. Cutting action is shockless.
3. Ability to cut fragile and heat sensitive materials without damage.
4. Ability to cut intricate hole shapes in materials of any hardness and brittleness.
5. No variation due to surface irregularities and tool wear as in conventional
machining.
6. Low capital cost.
7. SSM units are easy to operate and maintain.
DISADVANTAGES