阅读说明：本技术 一种提高汽车零部件生产所用模具材料性能的方法 (A method of it improving auto parts and components and produces mould therefor material property ) 是由 李孙德 于 2019-09-17 设计创作，主要内容包括：本发明涉及新材料加工技术领域,公开了一种提高汽车零部件生产所用模具材料性能的方法,通过微观结构组织层面和力学性能的研究对模具材料的综合性能进行提高,在铸铁熔炼后添加制备得到的球化剂,进行球化反应处理,所述球化剂材料在制备过程中,以氮化硅以及纳米级二氧化钛为原料,反应制备Si3N4/TiO2复合材料,其材质特性能够很好的解决现有球磨铸铁材料的弊端,加工制备的零部件的机械性能和耐磨强度显著提升,提高了抗拉毛性能,零部件精度显著提升,从而延长了组件的使用寿命,提高了汽车部件的使用性能和美观性。(The present invention relates to new material processing technique fields, disclose a kind of method of raising auto parts and components production mould therefor material property, the comprehensive performance of mold materials is improved by the research of microstructure level and mechanical property, the nodulizer being prepared is added after Castiron Melting, carry out spheroidizing reacion processing, the nodularization agent material is during the preparation process, using silicon nitride and Nano titanium dioxide as raw material, reaction preparation Si3N4/TiO2 composite material, its material characteristic can be good at the drawbacks of solving existing nodular cast iron material, the mechanical performance and wear-resistant strength for processing the components of preparation are obviously improved, improve tension hair performance, components precision is obviously improved, to extend the service life of component, improve the service performance and aesthetics of automobile component.)

1. a kind of method for improving auto parts and components production mould therefor material property, which is characterized in that add after Castiron Melting Add the nodulizer being prepared, carry out spheroidizing reacion processing, moulding by casting after slagging-off is processed into mold, the system of the nodulizer Standby process the following steps are included:

(1) it weighs 20-22 grams of silicon nitride to grind 2-3 hours, 2.7-2.8 grams of nano-titanium dioxide is added and is uniformly mixed, then exists Under argon atmosphere, it is warming up to 900-920 DEG C, calcined oxide 1-2 hours, cooled to room temperature was placed in prepared acid solution It impregnates 4-5 hours, the lasting lower oil bath of stirring is warming up to 88-90 DEG C, and 1.3-1.6 grams of sodium hydroxide is added, stops stirring, is aged 8-10 hours, it is naturally cooling to 20-25 DEG C, using the isolated solid sediment of supercentrifuge, using ethanol washing into Property, it is placed in 90-100 DEG C of drying box drying 7-8 hours, obtains Si3N4/TiO2 composite material；

(2) it weighs 7.5-8.0 grams of cerium oxide and is placed in 60-65 DEG C of glycol water and impregnate 30-40 minutes, then carried out Filter is cleaned by ultrasonic 5-8 minutes using acetone, is placed in 60-70 DEG C of drying box and dries, and the Si3N4 that step (1) is prepared is added Quickly under stirring, 15-18 milliliters of sulfurous aqueous acids are added dropwise in/TiO2 composite material, and rate of addition is 3-5 drops/sec, and stirring is mixed Refining 3-4 hours, is subsequently placed in the resistance furnace for being preheated to 270-280 DEG C, is warming up to 1060-1080 with 4-5 DEG C/min of speed DEG C, heat preservation calcining 1.5-2.0 hours, grinding obtains powdery nodulizer after cooled to room temperature.

2. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that The nodulizer particle size is between 0.7-1.0 millimeters.

3. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that The nodulizer additive amount is the 0.10-0.15% of cast iron material quality.

4. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that Step (1) the acid solution preparation method are as follows: weighing 2.0-2.4 grams of ammonium oxalate and being dissolved in 180-200 milliliters of mass concentrations is 16- In 18% hydrogen peroxide.

5. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that The consistency of step (1) Si3N4/TiO2 composite material is between 92.5-93.0%.

6. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that Step (2) the glycol water mass concentration is 80-85%.

7. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that Step (2) the sulfurous aqueous acid mass concentration is 26-30%.

8. a kind of method for improving auto parts and components production mould therefor material property as described in claim 1, which is characterized in that The cast iron composition content is according to mass percent are as follows: steel scrap accounts for 10-12%；Nickel accounts for 1.8-2.0%；Copper accounts for 1.1-1.2%；Manganese accounts for 0.8-0.9%；Tin accounts for 0.45-0.50%；Antimony accounts for 0.25-0.35%；Phosphorus accounts for 0.20-0.25%；Sulphur accounts for 0.15-0.20%；Residue is made a living Iron and inevitable impurity.

Technical field

The invention belongs to new material processing technique fields, and in particular to a kind of raising auto parts and components production mould therefor material Expect the method for performance.

Background technique

With the development of automobile industry, all kinds of auto parts and components also lean increasingly.The production quality of components relies on mould The quality of the performance of tool, most of existing auto parts and components are to process to obtain using nodular cast iron mold materials.

Spheroidal graphite cast-iron is a kind of 20th century high strength cast iron material for growing up of the fifties, comprehensive performance close to Steel is based on its excellent performance, has been successfully used to cast some stress complexity, intensity, toughness, wearability are more demanding Part.Spheroidal graphite cast-iron rapidly developed for be only second to gray cast iron, using very extensive cast iron materials.It is so-called " with iron generation Steel " refers mainly to spheroidal graphite cast-iron.Spheroidal graphite cast-iron is to obtain globular graphite by nodularization and inoculation, effectively improves cast iron Mechanical performance, plasticity and toughness are in particular improved, to obtain the intensity also higher than carbon steel.

With the high speed development of industry, exposed day by day the shortcomings that Cast Iron Die material: the material process-cycle is long, processing Costly, precision is low for combination, the mechanical properties problem such as plucking occurs in punching course, seriously affects automobile assembling quality.Therefore, Currently it is badly in need of a kind of economic, efficient mold materials, is of great significance for auto parts and components production.

Summary of the invention

The purpose of the present invention is being directed to existing problem, a kind of raising auto parts and components production mould therefor material is provided The method of performance improves tension hair performance, and components precision is obviously improved, to extend the service life of component, improves The service performance and aesthetics of automobile component.

The present invention is achieved by the following technical solutions:

A method of it improving auto parts and components and produces mould therefor material property, the ball being prepared is added after Castiron Melting Agent carries out spheroidizing reacion processing, and moulding by casting after slagging-off is processed into mold, and the preparation process of the nodulizer includes following Step:

(1) it weighs 20-22 grams of silicon nitride to grind 2-3 hours, 2.7-2.8 grams of nano-titanium dioxide is added and is uniformly mixed, then exists Under argon atmosphere, it is warming up to 900-920 DEG C, calcined oxide 1-2 hours, cooled to room temperature was placed in prepared acid solution It impregnates 4-5 hours, the lasting lower oil bath of stirring is warming up to 88-90 DEG C, and 1.3-1.6 grams of sodium hydroxide is added, stops stirring, is aged 8-10 hours, it is naturally cooling to 20-25 DEG C, using the isolated solid sediment of supercentrifuge, using ethanol washing into Property, it is placed in 90-100 DEG C of drying box drying 7-8 hours, obtains Si3N4/TiO2 composite material；

(2) it weighs 7.5-8.0 grams of cerium oxide and is placed in 60-65 DEG C of glycol water and impregnate 30-40 minutes, then carried out Filter is cleaned by ultrasonic 5-8 minutes using acetone, is placed in 60-70 DEG C of drying box and dries, and the Si3N4 that step (1) is prepared is added Quickly under stirring, 15-18 milliliters of sulfurous aqueous acids are added dropwise in/TiO2 composite material, and rate of addition is 3-5 drops/sec, and stirring is mixed Refining 3-4 hours, is subsequently placed in the resistance furnace for being preheated to 270-280 DEG C, is warming up to 1060-1080 with 4-5 DEG C/min of speed DEG C, heat preservation calcining 1.5-2.0 hours, grinding obtains powdery nodulizer after cooled to room temperature.

It is further described as to above scheme, the nodulizer particle size is between 0.7-1.0 millimeters.

It is further described as to above scheme, the nodulizer additive amount is the 0.10- of cast iron material quality 0.15%。

It is further described as to above scheme, step (1) the acid solution preparation method are as follows: weigh 2.0-2.4 grams of grass Sour ammonium is dissolved in the hydrogen peroxide that 180-200 milliliters of mass concentrations are 16-18%.

It is further described as to above scheme, the consistency of step (1) Si3N4/TiO2 composite material exists Between 92.5-93.0%.

It is further described as to above scheme, step (2) the glycol water mass concentration is 80-85%.

It is further described as to above scheme, step (2) the sulfurous aqueous acid mass concentration is 26-30%.

It is further described as to above scheme, the cast iron composition content is according to mass percent are as follows: steel scrap accounts for 10- 12%；Nickel accounts for 1.8-2.0%；Copper accounts for 1.1-1.2%；Manganese accounts for 0.8-0.9%；Tin accounts for 0.45-0.50%；Antimony accounts for 0.25-0.35%；Phosphorus accounts for 0.20-0.25%；Sulphur accounts for 0.15-0.20%；Remaining as the pig iron and inevitable impurity.

The present invention has the advantage that neutral in automobile die production application in order to solve ductile cast iron material compared with prior art The bad problem of energy, the present invention provides a kind of methods of raising auto parts and components production mould therefor material property, by micro- The research for seeing structure organization level and mechanical property improves the comprehensive performance of mold materials, and system is added after Castiron Melting Standby obtained nodulizer, carries out spheroidizing reacion processing, the nodularization agent material during the preparation process, with silicon nitride and nanoscale Titanium dioxide is raw material, reaction preparation Si3N4/TiO2 composite material, shows good wetability, repels electricity by preventing Son aggregation improves the plasticity of alloy structure, so that the mold materials being prepared have fabulous harden ability, hardness after quenching Height, deformation is small, and material structure is uniform, and its microscopic appearance and chemical structure composition determine that the casting character of mold is excellent, The presence of cerium oxysome structure has very strong anti-segregation performance using its special material mouldability, and shrinking percentage is low when solidification, adds Fast charging type speed improves the gap structure of material, constantly refines in microcosmic degree, and reduction impurity, which exists, makes mold mechanical property At damage, have lower coefficient of friction, meanwhile, it is capable to assign its new performance, fire resistance is higher, have excellent synthesis Performance, material characteristic can be good at the drawbacks of solving existing nodular cast iron material, process the mechanicalness of the components of preparation It can be obviously improved with wear-resistant strength, improve tension hair performance, components precision is obviously improved, to extend the use of component In the service life, the service performance and aesthetics of automobile component are improved, the present invention efficiently solves ductile cast iron material in automobile die The bad problem of performance in production application, improves the structural stability of ball milling austenite, relative to nodular cast iron material property It is promoted, cost reduces, and facilitating the balanced of mold materials various aspects of performance improves, and can be realized and improves auto parts and components production row Industry working efficiency and the realistic meaning for improving the market competitiveness have higher price for the research of auto parts and components processing mold Value, remarkably promotes modern cars Industry Quick Development and resources sustainable development, and one kind is extremely worth of widely use Technical solution.

Specific embodiment

To make the purpose of the present invention, technical solution and effect clearer, clear and definite, combined with specific embodiments below to this hair It is bright to be described further, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, is not used to limit Technical solution provided by the present invention.