正火

汽车齿轮锻坯正火后异常组织的预防

Prevention of Abnormal Structure about Forging Blank for Auto Gear after Normalize

有关皇室的书卖得正火。

Books on the Royal Family are selling like hot cakes .

正火、退火及淬火+高温回火组织的C1比较接近。

The difference in velocity among normalizing , annealing and high tempering structures are all approaching .

正火组织的C1介于淬火后中温回火及高温回火产物组织的C1之间。

The velocity in normalizing structure is between the velocity in medium temperature and high temperature tempering production after quenching .

正火温度对低碳微合金钢Z向性能的影响

Effect of normalization temperature on Z-direction property of low carbon microalloyed steel

RD2车轴锻后正火工艺分析及实验研究

Post modernization the research on normalizing for rd_2 wheel spindle after being forged

表面淬火C级钢比调质C级钢和正火C级钢的低周疲劳性能高，在应变量较大时，调质C级钢和正火C级钢低周疲劳寿命较高；

The low cycle fatigue property of surface quenching grade C steel is higher than that of normalization grade C steel and quenching and high temperature tempering grade C steel .

TEM观察表明：二次正火使碳化物颗粒变细，且改善了碳化物沿晶界的分布状态。

TEM examination shows that the second normalizing fines the grains of carbide and improves the state of distribution of carbides by grain boundaries .

在普通球墨铸铁的基础上，加入Cu、Sb合金元素，通过余温正火工艺，获得铸态珠光体球墨铸铁。

Based on common nodular cast iron , a pearlite nodular cast iron was obtained by normalizing and adding alloying elements of Cu , Sb .

正火工艺对20g钢板时效冲击性能的影响

The Effect of Normalizing Process on Ageing Impact Property of 20g Steel Plate

正火处理的Cr-Mo耐热钢焊接接头性能试验研究

Test of Weld Joint Property of Cr-Mo Steel after Normalizing Heat Treatment

随正火温度的升高，A组和B组耐火钢的抗拉强度和屈服强度均有所降低，延伸率升高，在800℃正火综合力学性能最好。

With the increase of normalizing temperature , tensile strength and yield strength of A and B series FR steels decrease , but elongation increases , mechanical properties under normalizing temperature is 800 ℃ are the best .

采用Cu、Sb合金化元素和余温正火工艺获得铸态高强度和具有良好韧性的珠光体球墨铸铁。

An as-cast high-strength pearlite ductile iron with good toughness was fabricated by method of the addition of Cu , Sb alloying elements in conventional nodular cast iron .

新型高Cr铁素体耐热钢的正火组织主要由高密度位错的马氏体板条和少量的δ-铁素体组成。

The normalized microstructure of the modified high Cr ferritic heat-resistant steels is composed of martensitic laths with high density dislocation , and a small quantity of δ - ferrite .

这两对磨擦副选用经表面淬火的正火态C级铸钢或经表面淬火的调质态E级铸钢和经过贝氏体淬火的球墨铸铁来制造。

These two wear fits are better produced by surface quenched grade C casting steel in normalization condition or surface quenched grade E casting steel in quenching and tempering condition and Bainite quenched spherical cast iron .

最后，钢种B组织中的铁素体含量随着正火温度的升高而增加，其显微硬度呈现先增加后减小的趋势。

With the quenching rate increasing , the structure has a tendency to fine . Finally , the content of ferrite in the steel B increases with the increasing normalizing temperature , and the microhardness increases firstly and then decreases .

用正交试验法确定了Cu、Mo高强度合金球铁的化学成份和正火温度，在此基础上进行了二次孕育试验。

On the basis of orthogonalized tests to determine the chemical composition of high strength Cu-Mo alloy nodular cast iron and its normalizing temprature , the post inoculation tests for this material have been carried out .

而正火态的Cr-Mo轨钢中的Mo2C沉淀已与基体失去共格关系，短纤维状的Mo2C沉淀物对基体起弥散强化的作用。

And the precipitate Mo_2C in the normolized Cr-Mo steel loses the coherence with the matrix , The short thready precipitates Mo_2C can strengthen the matrix by dispersion-strengthening .

研究了Q235钢在非稳态脉冲电流作用下正火后组织的变化。

The structural change of Q235 steel was studied in the action of unsteady pulse electric current after normalising .

正火温度对45V钢组织和性能的影响

Effect of Normalized Temperature on Microstructure and Properties of 45 V Steel

对正火45钢基体上的Cr、W、Mo和Ni电极电火花熔涂层在水、5vol%盐酸及硝酸水溶液中的腐蚀行为进行了研究。

The corrosion characteristics in water , 5 % HCl solution and 5 % HNO_3 solution of the coatings on 45 steel cladded by electrospark deposition with Cr , W , Mo and Ni anode was studied .

当试样经020%（质量分数）稀土变质后经950℃，3h正火处理时，热疲劳性能最佳。

When normalizing is taken at 950 ℃, 3 h after 0 20 % ( mass fraction ) rare earths modification , the best thermal fatigue property is obtained .

（M-A）相的存在证明102钢正火态组织是粒状贝氏体。

Furthermore , the existance of ( M-A ) phase shows that the normolized microstructure is granular bainite in 102 steel .

8620H钢齿轮锻件的正火处理

Normalizing Treatment for Exporting Gears Made of Steel 8620H Forgings

如淬火+回火态的变形抗力和变形能力都较高，但其总冲击功仅比正火态平均高6J，可却使其材料的裂纹扩展功平均提高16.78J。

The total impact works was 6J higher than which in normalized in average , however , the crack propagation works was 16 . 78J higher in average .

用传统粉末冶金方法制备了一种新型纳米TiN改性TiC基金属陶瓷可转位铣刀片。研究了这种面铣刀片在切削正火态45钢时的铣削性能及其失效机理。

A new flexible cermet miller fabricated from nearly full dense TiC-based cermets with TiN nano-powders is tested in face milling operations , in the dry cutting of a carbon steel 45 . Milling performances and wear mechanisms are studied in details .

当正火加热温度低于临界粗化温度TC时，含Nb微合金钢和Nb-Ti复合微合金钢的强度主要来自细晶强化，沉淀强化效应很小。

But when the normalizing temperature is below Tc which is the critical temperature for grains to coarsen , grain refinement plays a important part in the strengthening of Nb steel and Nb-Ti steel , and the precipitation contributes little .

亚温正火对BZ-11钢强韧性的影响

Effect of Subcritical Normalizing on Strength and Toughness of BZ 11 Steel

D36低合金高强钢焊接性研究A36、DH36控轧控冷取代正火工艺生产实践

Weldability of D 36 HSLA steel

介绍了正火处理的Cr-Mo钢焊接接头性能的工艺试验情况，重点探讨了焊接接头抗拉强度和低温冲击性能的影响因素。

This technology test presentation is about procedure test of weld joint property of Cr-Mo steel through normalizing heat treatment , including the tensile strength and impact toughness under low temperature .