- Castmaster stitching pins cracked#
- Castmaster stitching pins install#
- Castmaster stitching pins Patch#
- Castmaster stitching pins series#
- Castmaster stitching pins free#
The Full - Torque ® thread repair insert absorbs the spreading pressure of the fastener and transforms that pressure into a radial drawing force. By installing Full - Torque ® thread repair inserts you will solve the problem that caused the crack in the first place. Repairing the threads only solves part of the problem. The radial outward spreading force common to all threaded fasteners is the main cause of these problems. Threaded holes in cast iron, aluminum, bronze and soft steel, exhibit a high frequency of cracking and stripping. They can even make the problem worse by removing material around the threaded hole. Standard thread repair inserts and coils are ineffective in these situations.
The cracks are often developed in bolt holes due to stress concentration at the thread or frequent tightening and loosing.Ĭracked threaded to holes have always been difficult to repair because of the spreading force exerted when the bolt or threaded device is torqued. Repairs where using Locks is prohibited by access and/or contour. All cracks that will be strained by tightening a bolt in close proximity to the repair.Ĥ. All cracks that run parallel with an inside or outside corner.ģ. All cracks placed in tension across the repair.Ģ.
Castmaster stitching pins series#
The following are examples of repairs done with C Series stitching pins:ġ. Many other cracks and joints where there is enough strength in the surrounding metal to contain the spreading force of the pins. Seal simple cracks less than 3” in length.Ħ. To fill scratches, dents and other imperfections on machined surfaces.ĥ.
Castmaster stitching pins Patch#
To secure and seal a patch for a blowout hole in an engine block.Ĥ. In combustion chambers of cylinder heads,Ģ. The L Series pins can be installed at any angle to the surface and are used to repair the following types of cracks:ġ. Using locks and „CASTMASTER ® ” pins together will be stronger than original. Lock pattern holes are drilled with a special drill jigs and all of locks have a unique ability to pull the sides of the crack together. Locks are intended to be stacked or laminated to a depth of 80% of the thickness of the material being repaired with a hammer. Lock can be installed to add strength across cracks.
Castmaster stitching pins install#
Because these pins seal on the threads, it is possible to install them at steep angles to the surface. All LOCK-N-STITCH ® pins are designed to be installed up to the shoulder so the head can twist off while leaving a small amount above the surface to grind or machine off. The steel pins are made of a soft machinable steel that has the same expansion rate as cast iron with about the same hardness and corrosion resistance. Our L Series pins consist of three different diameters, several different thread length, and are made of either steel or aluminum. Remember, L Series pins create spreading pressure. If the casting doesn't have enough structural strength to contain the spreading pressure, extension of the crack can occur. This results in spreading pressure on the crack. The most important thing to remember about the L Series pins that when tightened into the casting they seal on the threads because the pin is bigger than the tapped hole.
Castmaster stitching pins cracked#
Special designed Full - Torque ® thread inserts can be used to repair a stripped or cracked bolt hole permanently. Special designed pins create a drawing force pulling the cracked parent metal contrary to the spreading force created by conventional thread.Īdditionally, high tensile strength locks are used where additional structural strength is needed.īy installing pins and locks, the repaired part can be stronger than original and perfect sealing is also guaranteed. Metal Stitching is a technology to repair damaged or cracked metals using special designed pins and locks without welding. Hardening will also make machining, drilling and tapping difficult if not impossible. In cast iron, hardening results in brittleness and the loss of good properties such as vibration dampening and ductility. Rapid cooling of high carbon iron and steels will cause hardening. However, it is responsible for the lack of difference between yield and tensile strengths.Īnd hardening is caused by the weld or Heat Affected Zone cooling too fast.
Castmaster stitching pins free#
The high carbon content gives cast iron many of its desirable characteristics like free machinability, uniform heat transfer, excellent wear surface and high quality casting capability. This often requires re-machining of critical surfaces. This is why cast iron must be preheated over 482ЃЋ in order to relieve stress.Īt 649ЃЋ cast iron can stretch to relieve stress under strict oven welding procedures.Īll welds properly performed on cast iron result in some distortion. INTRODUCTION/ Renovation for crack repair: LOCK-N-STITCH ®īecause yield and tensile point of cast iron are the same, it cannot bend or stretch to absorb stress caused by thermal expansion and contraction.
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