Cylinder Block And Cylinder Head Crack Repair Method topic posted in Car Electronics Forum

Discussion in 'Car Electronics' started by qiangasgoo, Apr 11, 2017.

  1. qiangasgoo
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    During the operation of the diesel engine, the cylinder block and the cylinder head are prone to crack, resulting in leakage, leakage, burn the Please login to see links and more information., and even mechanical accidents. Cylinder block and cylinder head cracks should be promptly repaired, the main methods are the following four.

    Fill plate method
    Fill plate method is mainly used to repair the cracks more and relatively concentrated or part of the hole body surface of the body. The concrete steps are: ① remove the crack near the preparation of the fill plate parts of the oil, paint and other objects; ② with a diameter of 3 ~ 5 mm drill bit at the end of each crack drilling hole to prevent the crack extension; ③ the thickness of 2.5 ~ Of the low-carbon steel plate cut into the fill plate, fill plate than the crack around the wide 20 ~ 30 mm; ④ drilling along the plate around the hole spacing of 15 ~ 20 mm, aperture of 3 ~ 5 mm; On the crack, so that it is close together with the Please login to see links and more information.or cylinder head, then fill the plate as a template in the cylinder block or cylinder head drilling and tapping; ⑥ with a screw to fill the plate fixed. Should be fixed before the plate and the cylinder block or cylinder head pad with a layer of asbestos pad, if the two veneer coated with red oil, the effect will be better.

    2. Planting method
    Silk method is often used to repair a single crack, as shown in the figure, the method: ① with a diameter of 3 ~ 5 mm drill first at both ends of the crack drilling holes 1 and 2, and then drilled every 2 ~ 4 mm Hole 3, hole 4; ② drilling in the hole in the tapping; ③ the screw into the hole into the hole, screw into the length and Please login to see links and more information. wall thickness of the same, then cut off the copper rod, the cross-section above the cylinder 2 mm ; ④ with the same method, according to the order of drilling in the order of drilling a series of holes, tapping and screwed into the copper rod screws, the formation of a screw on the entire chain of chains; ⑤ with a hand hammer gently ripped copper The exposed part of the screw, the riveting flat; ⑥ water pressure method to check whether the leak at the crack, if a slight leakage, you can continue to use hand hammer light riveting leakage of copper screws.

    3. Welding method
    Welding method is: first with a 4mm diameter drill bit at both ends of the crack drill hole, while the crack along the open v-groove groove, the depth of the groove to not exceed the body wall thickness of 2/3 is appropriate; and then diameter 4 mm Of the bimetallic electrode (or in the case of heating with cast iron electrode) can be welded.

    In order to prevent the welding parts after welding caused by internal stress or warping phenomenon, should be in the weld when the red hot, with a hammer hammer hammer beats to eliminate the slag. If the crack is too long, must be separated from the welding, generally 20 ~ 30 mm length is appropriate, to be 70 mm away from the weld to be able to hand to touch, and then welding the next paragraph. If the crack is too deep, can be used multi-layer surfacing method, must not be a welding.

    4. Adhesive method
    To repair the cylinder crack as an example, the steps are: ① 1 # coarse sandpaper to remove the cracks around the cylinder block of silver and rust, polished width of about 30 mm, the length should be more than 30 mm at both ends of the fracture; Line chisel cut width of 3 mm, depth of 2 mm V-groove, and drilling at both ends of the crack hole; ③ with a metal cleaning agent cleaning around the cracks, to be dry, and then scrub the wine again; Of the glue filled with cracks and V-shaped groove, and in the groove and the cloth on the pre-prepared cloth on the glue, the cloth sticks on the cracks in the original leakage of serious places, with the same method sticky 2 layers of cloth, ⑤ in the cloth outside the cloth and then even coated with a layer of glue.

    After 24 h of this treatment, the diesel engine can be put into use. If in winter, in order to speed up the curing speed of viscose, water radiator should be injected into the hot water, so that the body to maintain a high temperature.

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