Draw Spike In Foundry

The draw spike is a pointed steel rod, with a loop at one end. These foundry tools are used to rap and draw patterns from the sand. Fig.

11.46 illustrates two kinds of draw spikes. In molding shop, it is used for driving the draw spike into the pattern and then rapping it for separation from the mould surfaces so that pattern can be easily withdrawn leaving the mold cavity without damaging the mold surfaces. Draw spike Draw spike is a tapered steel rod having a loop or ring at its one end and a sharp point at the other.

Hello Friends (नमस्कार दोस्तों)In this Lecture, we are going to understand the different type of foundry hand tool used in foundry shop. Such as followings*S. Learn how to make molds for casting metal using sand, clay, and various tools.

Find out what draw spikes are and how to use them for drawing wooden patterns from the sand. DRAW SPIKE Draw spike: Draw spike is shown. It is a tapered steel rod having a loop or ring at its one end and a sharp point at the other.

It may have screw threads on the end to engage metal pattern for it withdrawal from the mold. It is used for driven into pattern which is embedded in the molding sand and raps the pattern to get separated from the pattern and finally draws out it from the. An improved Draw Spike Discussion in ' Foundry tools and flasks ' started by Melterskelter, Aug 8, 2019.

This document describes various hand tools used in foundry shops for molding operations. It discusses common tools such as hand riddles, shovels, rammers, sprue pins, strike off bars, mallets, draw spikes, vent rods, lifters, trowels, slicks, smoothers, swabs, gate cutters, gaggers, spray guns, and nails. These hand tools are used for tasks like cleaning sand, mixing and transporting sand.

1.13 Draw spike (screw) Draw spike are used to lift the pattern from the sand mould. Two types of draw spike are shown in the figure. Draw pin is inserted into a wooden pattern while thread end of draw spike screws into a wooden pattern draw plate fastened to the large wooden plate or tapped hole of metal pattern.

1.14 Rapping plate. Draw spike. Steel rods which are sharpened at one end for driving into a wooden pattern to rap and draw on it and are principally used in bench work for drawing small patterns.

It is a tapered steel rod having a loop or ring at its one DRAW SPIKE 13 end and a sharp point at the other. It may have screw threads on the end to engage metal pattern for it withdrawal from the mold.

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