The load of impact toughness acting on the parts at a great speed is called impact load. It is specialized in products and renewable resources. Its business includes: square tube， square tube， seamless square tube， galvanized square tube and galvanized tube. The ability of metal under impact load is called impact toughness.
Bai LinggenIn order to ensure the stability of the perforation performance and chemical properties of the billet of the square tube， the technical regulations shall be strictly implemented in the operation of the circular furnace， the operation of the heating furnace shall be frequently，Bai LinggenSquare tube factory， the abnormal conditions shall be handled in time and recorded，Bai Linggen150 galvanized round pipe， and the follow-up posts and quality management department shall be notified in time for handling.
After cold drawing and aging treatment， the yield point is improved， the tensile ultimate strength is also increased， and the plasticity continues to decrease. Due to the reduction of internal stress during aging， the modulus can be basically restored. According to this principle， cold drawing or cold drawing of reinforcement or low carbon steel wire rod is often carried out on site or prefabricated component factory， so as to improve yield strength and save steel.
LinzViewing color: the color of the cold galvanized square tube is yellowish green， cyan white or slightly colored at a fixed angle with the sun. The color of hot-dip galvanized square pipe is silver white at a fixed angle with the sun.
So flat， and the size and thickness are not standardized， it can reflect that this square tube is a poor product& rdquo;
Classification of square pipe material square pipe is divided into ordinary carbon steel square pipe and low alloy square pipe according to material. Ordinary carbon steel is divided into Q Q q SS， # steel， # steel， etc; Low alloy steels are divided into q Mn， Q， St-， as the name suggests， is to compact the bending. During real bending the inner and outer rollers and the inner and outer walls of the pipe blank are compacted in both directions.
All seamless qb square tubes shall be tested for mechanical properties. Mechanical property tests are mainly divided into two categories: tensile test and hardness test.
Reinforcing phases such as reinforcing particles， short fibers and whiskers can be added to the solder to form composites.
Analysis projectThe square tube is divided into a. boiling steel according to the degree of deoxidation and pouring; b. Semi killed steel; c. Killed steel; d. Special killed steel. The deformation of qb square tube is mainly caused by the shrinkage force of the weld greater than the strength of the base metal.
Forging square tube: a kind of pressure processing in which the reciprocating impact force of the forging hammer or the pressure of the press changes the blank into the shape and size we need. It is generally divided into forging and die forging. It is often used to produce large-scale materials and materials with large square tube size.
There are many ways of ignition， such as arc， electric spark， flame， strong current， high-temperature furnace， electron beam， laser， high-temperature radiation， microwave， chemical furnace， etc.
For improper stamping direction， simulation software shall be used in the initial stage of design to ensure that the direction of stamping parts is analyzed， and when the high-quality requirements of components require the re development of molds， the direction shall be adjusted to seamless square tubes. The square tube manufacturer introduces the forming， bending and bending of square tubes. As the name suggests， the bending is compacted， and the inner and outer rollers are double with the inner and outer walls of tube billets during actual bending Compact towards the.
Welcome to inquireBecause the green billet can be pressed into any shape， it is easy to weld the square tube into difficult products.
The difference between qb square tube and QA is that there are fewer impurities s and P and better low-temperature impact performance. From the welding point of view， when the impurity elements in the base metal are less， the annealed state of square tube: A. hypoeutectoid steel (ferrite + pearlite); b. Eutectoid steel (pearlite); c. Steel precipitation through a common square tube (pearlite + cementite); d. Ledeburite steel (pearlite + cementite).
Bai LinggenSquare tube heating process square tube calculates the chip thickness of workpiece. After each regrinding， the service life of the saw blade. Regrinding times of the saw blade. When the saw blade is replaced， the main drive AC motor spindle rotates stepless speed change AC motor feed capacity stepless speed change feed fast return to a constant value center system brush device hydraulic saw cutting system system system represents the quality RA flatness， large burr height cutting Chip length tolerance dimension: width and length . ~ .mm ~ m ~ ~ min kW ~ rpm ( kw ~ mmmin mmmin .kw .kw & times; kW S & mu; m . mm & plusmn; mm about mm about mm about mm high. The total weight of each billet square tube is seconds (including， saw blade return， opening device， pipe blank discharge head and tail cutting time， which is composed of a fixed gear vibration reduction but excluding pipe blank transportation time). The large production capacity of the three saws is T / A. the pipe blank saw has a special reversing device (hydraulic servo device) to reduce vibration and improve the service life of the saw (only during feeding). The sawing machine has two devices distributed at the inlet and outlet (the input area is supported by roller table to ensure the bending of billet) The inlet end after sawing. Open it to ensure that the saw blade does not contact the blank when it returns. & mdash; feed saw gear & mdash; saw gear vibration reduction， as a movable vibration reduction to avoid the axial of the saw blade. & mdash; brush and sweep device & mdash; a driving brush and sweep device is installed at the bottom of the saw blade to clean the iron filings on the teeth and will not affect the service life of the saw blade. &Mdash; saw blade. In order to improve the service life of the saw blade， a small amount of high load agent container is atomized by air and poured on the saw blade without residue. & mdash; saw blade cooling device. A special nozzle is used to spray cold air at - oC on the saw blade. The cut-off blank is transferred to the buffer chain in front of the loader after passing through the outlet roller table and weighing device (Note: # before sawing， there is a feeding bench for single size billets that need to be cut， and after weighing， there is a feeding bench for returned billets). The buffer transfer chain transports the billets to the lower roller table of the loader. The billets are turned over from the chain to the roller table by the turnover hook. The weighed qualified billets are loaded into the annular furnace by the loader， and the weighed unqualified billets are transported from the roller table to the removal bench for removal.
According to smelting classification and furnace type， A. open hearth steel: (a) acid open hearth steel; (b) Alkaline open hearth steel.
Ferrous metals refer to iron and iron alloys. Such as steel，Bai LinggenHow to galvanize square tube， pig iron， ferroalloy， cast iron， etc. Steel and pig iron are alloys based on iron square tube and carbon as the main added element collectively referred to as iron carbon alloy.
