Threaded Rod must have high fatigue strength, elasticity, rigidity and toughness, and strength and toughness is conflicting. Threaded rod Rod, is a slender rod pieces of heavy steel hollow drill rod, not suitable for complex heat treatment, can only get comprehensive performance fatigue strength, elasticity, rigidity and toughness with optimum heat treatment process through. Threaded Rod ends are part of the package solder joins the group Rock Drilling hollow steel rod, which is fretting failure mechanisms and impact wear, therefore, require high surface hardness wear-threaded parts, the center has enough toughness, to prevent breakage. It is well known properties of materials, often after heat treatment in order to give full play to their maximum potential, therefore, the choice of material is often considered together with the heat treatment process. Threaded Rod a foreign material selection Currently, foreign threaded drill rod material summed up in two series. A series is a low-carbon, high-strength, high hardenability, high toughness steel CrNiMo-based system, the carbon content of about 0.25%, Ni content of about 3 percent, the most representative of the steel is 25CrNi3Mo, heat treatment process route is: the overall control of the cooling carburizing → → → threaded portion of the quenching and tempering. After the whole carburizing controlled cooling the rod body to achieve the desired hardness, rigidity and ensure an elastic rod member; subsequent threaded portion quenching, tempering the threaded surfaces to obtain high hardness and high compressive stress to obtain a high fatigue strength and high wear resistance . Most foreign Threaded Rod are using this material and heat treatment process route. Another series is still CrNiMo, but the carbon content of between 0.30% to 0.45%, some countries have increased Cr and Ni V or adjust the content of the heat treatment process is used to control cooling hollow rolled steel, ensuring rod hardness; Threaded parts of quenching after induction hardening to obtain high surface hardness and high compressive stress, but also has high fatigue strength and high wear resistance. This series also has a lot of countries have adopted, but generally only for D45, D51, D38 Arbors also used a small amount of drill rod. 2 Threaded Rod Our choice of material into hammer drill rod drill rod and drill picks hollow steel, drill rod English word for drill rod, hammer hammer drill rod according to origin, brand, and model into DMG ( DMG) Aide Te (EDT) Jomo (JAOMER) Tony Lite (BEILITE) Korean special forces (HLT) Revival (1300HUNG) Thai Star (TAIXING) welding lion (HUSKIE) Konan Motor (MKB) Soosan (SOOSAN) wide Lin (GUANLIN) large mode (DAENO) Italian Deco (INDECO) NPK Monte Bedford (MONTABERT) Komatsu (KOMATSU) Furukawa (Furukawa) Han Yu (HANwOO) East Air (TOKU) Japan (TOYO) Krupp (KRUPP) Engineers (GENERAL) Okada (OKANA) Atlas (ATLAS COPCO) warriors (MSB) Sean (MIRACLE) Dade (COMET) Korea Tektronix (HI-TECH) extension provision amounted to (TORPEDO) Stanley (STANELY) and other brands. The rise of Rod: Rod ban after large quantities system in the country during the mining explosives, drill rod material is 42CRMO roll bar, 42CRMO forging round. Rod machining process: the first round after blanking ductile annealing heat treatment, after payment processing with CNC lathes, milling machines for the gifted, strict control of company data, also used in the production of Pu car, followed by a heat treatment step, preferably salt bath furnace, but because of domestic bath heaters strict control, so most enterprises mainly Pit carburizing furnace, quenching liquid quenching liquid is superior to imports, the final process is blasting, painting and packaging. Rod heat treatment process to the overall quenching, tempering segmentation is superior. Rod impact part of HRC hardness value of 56 to 58, the piston impact site HRC 45 to 48 for the gifted. Circular hollow steel, hollow steel, Shandong Drilling Co., Ltd. Peng Rui Peng Rui provided by Shandong Drilling Technology Limited. Drilling Ltd. Shandong Peng Rui (www.zbpengrui.com) strong, credible, Shandong Zibo metal cutting and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Drilling Ltd. Shandong Peng Rui and you hand into the brilliant, for a better future!