Preparing method of board hammer, board hammer and impact crusher with board hammer
A technology of impact crusher and blow bar, which is applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of high cost, affecting product yield, and complex blow bar manufacturing process, so as to achieve high production efficiency and benefit large Large-scale industrial production, the effect of high yield rate
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[0034] According to one aspect of the present invention, a kind of preparation method of blow bar, described preparation method comprises the following steps:
[0035] The cast iron is smelted first to obtain molten iron, and then the steel core is inserted into the molten iron, so that the steel core and molten iron are mutually soluble, cooled and solidified, and a blow bar is obtained.
[0036] In the preparation method of the blow bar provided by the present invention, cast iron is smelted first to obtain molten iron, and then a steel core is inserted into the molten iron so that the steel core and the molten iron are mutually soluble, cooled and solidified to obtain a blow bar. The above-mentioned method has the advantages of simple preparation process, high production efficiency, high rate of finished products, and is conducive to large-scale industrial production, and effectively alleviates the complicated manufacturing process of the existing blow bar, high cost, and th...
Embodiment 1
[0075] A preparation method of a blow bar, the preparation method comprising the following steps:
[0076] (a), high chromium wear-resistant cast iron is put into the smelting furnace, and smelted at 1350 ° C to obtain molten iron;
[0077] The high-chromium wear-resistant cast iron includes the following components by mass percentage: C 2.1%, Si 0.35%, Mn 0.5-0.9%, Cr 7.0%, Mo 1.2%, Ni 0.8%, P 0.1%, S 0.06%, The rest is Fe.
[0078] (b) Use 1-2mm iron sand to sandblast and derust the steel core, and then heat the steel core under a protective atmosphere of argon until the temperature within 1 mm of the surface layer of the steel core is 1000°C;
[0079] The steel core is conical;
[0080] (c), after adding an inoculant to the molten iron in step (a), pouring molding is carried out;
[0081] (d), the steel core after the heating of step (b) is directly inserted into molten iron after pouring so that the steel core and molten iron are mutually soluble, cooled and solidified ...
Embodiment 2
[0084] A preparation method of a blow bar, the preparation method comprising the following steps:
[0085] (a), high chromium wear-resistant cast iron is put into the smelting furnace, and smelted at 1350 ° C to obtain molten iron;
[0086] The high chromium wear-resistant cast iron includes the following components by mass percentage: C 3.6%, Si 0.7%, Mn0.9%, Cr 25.0%, Mo 2.0%, Ni 1.2%, P 0.1%, S 0.06%, the rest For Fe.
[0087] (b) Use 1-2mm iron sand to sandblast and derust the steel core, and then heat the steel core under a protective atmosphere of argon until the temperature within 1 mm of the surface layer of the steel core is 1000°C;
[0088] The steel core is inverted T-shaped;
[0089] (c), after adding an inoculant to the molten iron in step (a), pouring molding is carried out;
[0090] (d), the steel core after the heating of step (b) is directly inserted into molten iron after pouring so that the steel core and molten iron are mutually soluble, cooled and solid...
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Abstract
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