az91d magnesium alloy isothermal forging fine with the following characteristics

(A) the balance of small, high precision, high complexity, after forging a small allowance or partial processing, or even processing (b) forging continuous fiber, good mechanical properties, anisotropy is not obvious, because the isothermal forging rough time large deformation and the metal flow uniformity, forgings available equiaxed fine grain structure so that the yield strength of forgings, low-cycle fatigue properties and resistance to stress corrosion significantly improve (c) forgings no residual stress at a high temperature due to the rough slow The strain rate plastic deformation, metal sufficiently softened, even within the organization, both inside and outside the stress and deformation uneven no conventional forging difference generated, eliminating the residual stress, dimensional stability after heat treatment (d) high utilization of materials, the use of small margin or no margin forging purification design, the conventional forging forging material utilization of 10% -30% to the like 60% -90% (e) forging temperature increase when the plastic metals, since the isothermal slow Under conditions of rapid deformation, deformation of the metal dislocations had time to reply, and to the occurrence of dynamic recrystallization so difficult deformation of the metal mold and heating means good plasticity isothermal forging has must meet the following requirements (a) The mold is heated to blank forging temperature and keep the temperature constant (b) during forging long-term work in the deformation temperature must guarantee the same performance (c) ensure that there is between the heated die forging equipment and reliable insulation edge now. Mold heating method, there are mainly resistive, electric induction and flame formula several (a) displacement slider slow speed in working stroke, adjustable, can protect against the working pressure (b) large enough Workspace (c) there is top of the device (d) equipment stiffness isothermal forging process is typical: cutting - test - heating - Forging stock - polished - test - pitting cleaning - heating - Isothermal forging the first fire - polished - erosion wash - test - heating - Isothermal forging a second fire - eclipse wash - polish - test Magnesium alloy at elevated temperature adhesion large, poor mobility, are prone to defects, and therefore used to generate more than twice the fire method for molding Each forging once, both for rough surfaces clean in order to ensure the quality of forgings. Manufacturers Tel: 13700885541 QQ: 2511381938