| The heddle is in the loom crucial work part, the heddle wear-resisting performance is one of its service life major targets or quotas. Along with the loom speed and the output large scale enhancement, the heddle attrition speeds up, leads the gauze performance rapid decline. How therefore solves the domestically produced heddle service life short problem especially to be important.This topic for enhances the domestically produced heddle the service life, proposed one kind of new stainless steel heddle material heat treatment craft, namely in does not change the use domestic product material quality under the condition, applies the magnetic field quenching technology in the stainless steel heddle material heat treatment strengthening.This topic design magnetic field quenching installment is the use ferromagnetic archery target characteristic, composes in the ferrite core in the magnetic field return route crevice place produces the high strength magnetic field, is passing the crevice by this function the stainless steel heddle material. The experimental study result indicated that,This technology can remarkably enhance the stainless steel heddle material the strengthened effect, under this test condition, degree of hardness is highest may enhance 52HV;Is enhancing the wear resistant aspect, magnetic field quenching may obviously enhancethe stainless steel heddle material the resistance to wear;In the certain magnetic field strength scope, along with the magnetic field strength increase, its resistance to wear and degree of hardness also enhances. Regarding does not have magnetic field quenching the stainless steel material, following goes to the tempering craft the optimization is enhances the stainless steel wear-resisting performance the effective action, the best drawing temperature scope is 200 ~ 300 .In the testing discovered that, the hardening temperature is 970 °C soaking times is 7 minutes heat treatments labor art causes the test specimen to obtain the high tenacity coordination, like uses this material usual quenching heating temperature 1,050 ~ 1,110 °C and 15 minutes soaking times, will cause to model toughness to drop.Using X beam modern analysis measuring instrument and so on diffraction meter, scanning electricity mirror, atomic force microscope, to quenches in the organization the remaining austenite, the microstructure, the dislocated mosaic structure and the microhardness carries on the analysis, carries on the discussion to the magnetic field heat treatment strengthening mechanism, further has discussed magnetic field quenching to the martensite mosaic structure influence.Has analyzed the main action mechanism which the low-carbon steel magnetic field strengthens is the magnetic field quenches has thin melted in the quenching organization's mosaic structure. And has analyzed in the certain magnetic field scope, increases along with the magnetic field, the tenacity increases the mechanism, at the same time analyzed the magnetic field to increase the reason which the test specimen machine capability dropped after a definite value is becauseincreased along with the magnetic field, "C" the curve shifted to the left, caused the non- martensite organization under the air cooled condition to produce to. |
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