Apparatus for repairing cracks

Details Apparatus for repairing cracks Apparatus for repairing cracks

B - Operations, Transporting

23

P

B23P 6/04 (2006.01) B23G 5/06 (2006.01) F16B 33/02 (2006.01) F16B 35/04 (2006.01)

Patent

CA 2164718

A pin (10) is provided for repairing cracks (C) in a material (M) such as iron casting materials. The pin includes threads (60) with both upper and lower surfaces wich angle toward a head of the pin. A tapping bit (550) is utilized in a hole (H) of similar diameter to the pin, positioned with half of the hole on each side of a crack, the bit creating threads in the hole which are substantially complemental to the threads of the pin. The pin includes a shoulder (40) which has a greater diameter than a diameter of the hole. When the pin is threaded into the hole, the shoulder abuts against a surface (S) of the cracked material causing the pin to cease translation into the material. Upon further rotation of the pin, the upwardly angled threads draw opposite sides of the crack towards each other.

Une broche (10) destinée à la réparation de fissures (C) dans des matériaux (M) tels que les matériaux de coulée à base de fer comprend un filetage (60) dont les saillies ont une surface supérieure et une surface inférieure qui forment un angle dirigé vers la tête de la broche. Un taraud (550) est introduit dans un trou (H) de diamètre semblable à celui de la broche et situé avec la fissure à son centre, et y crée un filetage correspondant sensiblement à celui de la broche. Celle-ci comporte un épaulement (40) dont le diamètre est supérieur à celui du trou. Lorsque la broche est vissée dans le trou, l'épaulement bute contre la surface (S) du matériau fissuré, ce qui arrête la pénétration de la broche dans le matériau. Si l'on continue à faire tourner la broche, les filets orientés vers le haut ramènent les deux parois de la fissure l'une vers l'autre.

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