Datong Hydraulic

Hard chrome plating is an electroplating process that involves applying a layer of chromium to a surface by submerging it in a chromic acid solution. Hard chrome plating can increase the durability, hardness, wear resistance and corrosion resistance of metal components for more effective use in machinery and equipment.it also creating a shiny and smooth surface that is easier to clean. For improved wear and corrosion resistance, it’s tough to beat hard chrome plating. The hardness and durability of a chromium metal surface finish means your parts will last longer even under severe mechanical contact and wear situations. A chrome surface also resists corrosion, making it suitable for use in harsh environments or where other plating materials would wear away, exposing the substrate metal to corrosion attack. How Long Does Chrome Plating Last? The longevity of any chrome plating depends on several factors: Surface preparation care and method Choice and qu...

  High precision cold drawn tube  surface roughness Ra ≤ 0.8μm, diameter size accuracy can reach H9 ~ H10, only to ensure that after honing to H7 ~ H8 bore size and Ra ≤ 0.2μm of the internal surface roughness requirements. In addition to the honing machine equipment precision, the cold drawn tube surface quality is another key point, cold drawn tube internal surface defects by the domestic A factory measured data classification, there are three kinds of main  honing pipe  surface roughness. 1. Pitting: After rough drawing, the surface can be found by many pits-like defects, such defects will not seriously affect the smoothness of the cylinder bore, for the cylinder is a waste. 2. Scratch: Scratch defects are cold drawn, generally along the axis of a steel pipe along the direction of the scratches, there must be more than the depth of the scratches honing margin, it is possible to grind away such defects, processing a qualified  cylinder . 3. Not round: Cold dra...

  The  cold drawn cylinder tube   is well known as a   hydraulic cylinder tube   in industries applications.As honed tubes are the most important parts of manufacturing hydraulic cylinders. Hydraulic cylinder tubes are cold drawn cylinder tubes with the internal surface skived and roller burnished finished or honed. The SRB process is a complex process that is increasing the roughness qualities of the surface. The skiving knives pass first scraping the inside layer of metal. Burnishing rollers are passing afterwards cold working the tube and creating an internal mirror surface finish. Honing is an abrasive machining process that produces a precision surface on a metal workpiece. The process consists of scrubbing an abrasive stone against it along with a controlled path. Honing is primarily used to improve the geometric form of a surface and the surface texture. Main applications of Hydraulic honed tubing Honed tubing  and SRB tubes (skived and roller burnis...

  Cold drawing (rolling) steel tube: round pipe blank → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank pipe → heat treatment → straightening → hydrostatic test (flaw detection) → marking → warehousing. What is a  cold drawing steel tube ? Hot-rolled steel pipe is made of continuous casting slab or initial rolling slab as raw material, which is heated by walking-beam heating furnace, descaled by high-pressure water, and then entered into roughing mill. The roughed material is cut into head and tail, then entered into finishing mill, and then rolled by computer control. After final rolling, it is cooled by laminar flow and coiled by coiler to become straight hair coil. The head and tail of straight hair curls are often tongue-shaped and fishtail-shaped, and the accuracy of thickness and width is poor. The edges often have defects such as wave shape, folded edge and tower shape. OUR HOT PRODUCTS: Skiv...