Abstract:
A rotary cone drill bit includes at least one leg carrying a journal provided with bearing surfaces cooperating via bearing elements with bearing races in a rotatable cone cutter. The cone cutter is provided with rows of crushing elements. Each crushing element has a greatest width (D) and a greatest height (H), wherein H/D
Abstract translation:旋转锥形钻头包括至少一个支承轴颈的轴,所述轴颈具有轴承表面,所述轴承表面通过轴承元件与可旋转圆锥切割器中的轴承座配合。 锥形切割机设置有一排破碎元件。 每个破碎元件具有最大宽度(D)和最大高度(H),其中H / D <1.2。 破碎元件焊接到锥形切割器的主体上以与其形成冶金结合。
Abstract:
A rotary cone drill bit includes at least one leg carrying a journal provided with bearing surfaces cooperating via bearing elements with bearing races in a rotatable cone cutter. The cone cutter is provided with rows of crushing elements. Each crushing element has a greatest width (D) and a greatest height (H), wherein H/D
Abstract translation:旋转锥形钻头包括至少一个支承轴颈的轴,所述轴颈具有轴承表面,所述轴承表面通过轴承元件与可旋转圆锥切割器中的轴承座配合。 锥形切割机设置有一排破碎元件。 每个破碎元件具有最大宽度(D)和最大高度(H),其中H / D <1.2。 破碎元件焊接到锥形切割器的主体上以与其形成冶金结合。
Abstract:
The present invention relates to a method for the manufacturing of drill bits for percussive rock drilling and a rock drill bit (10) and a button (14A). The rock drill bit includes a head portion (11) with a forward surface (13; 15), which has a number of buttons (16) provided in a peripheral wreath, and a number front buttons (14A) placed inside the peripheral buttons (16). At least one of said buttons has a diameter (D) and a height (H). The button (14A) is welded to an essentially flat part of the forward surface. The button is metallurgically bound to the forward surface (13, 15) and the following formula applies: H/D
Abstract:
The present invention relates to a method for the manufacturing of drill bits for percussive rock drilling and a rock drill bit (10) and a button (14A). The rock drill bit includes a head portion (11) with a forward surface (13; 15), which has a number of buttons (16) provided in a peripheral wreath, and a number front buttons (14A) placed inside the peripheral buttons (16). At least one of said buttons has a diameter (D) and a height (H). The button (14A) is welded to an essentially flat part of the forward surface. The button is metallurgically bound to the forward surface (13, 15) and the following formula applies: H/D