The invention provides a wear-resistant steel plate for a low density light dump truck and a preparation method thereof. The remarkable characteristics of this type of steel plate are: (1) martensitic tissue is the matrix structure; (2) the steel plate is designed to add Al elements with a mass percentage of 3 and 4%, and (3) the hardness of the steel plate is between 360 and 480HB. The manufacturing method is to select different alloy components for smelting, continuous casting or mould casting into billet, and the required steel plates are made through heating, controlled rolling, controlled cooling, heat treatment and other processes. The steel plate is especially suitable for the manufacture of equipment or parts such as large miner carriage or city residue car. By adding more Al elements, the steel plate density is reduced and the quality of the manufactured equipment is reduced. At the same time, the steel plate also has good formability (suitable for 90 degrees cold bending) and welding performance, especially with higher quality. Low temperature impact toughness and wear resistance.
【技術(shù)實現(xiàn)步驟摘要】
一種低密度輕質(zhì)自卸車車廂用耐磨鋼板及其制備方法
本專利技術(shù)涉及低合金化鋼制造領(lǐng)域,具體涉及一種低密度輕質(zhì)自卸車車廂用耐磨鋼板及其制備方法。
技術(shù)介紹
近年來,隨著社會和經(jīng)濟(jì)的高速發(fā)展,節(jié)能降耗、減少環(huán)境污染和節(jié)約資源成為大家面臨的一個十分迫切的問題。對于礦山用或城市渣土車用自卸車來說,降低車身重量,不但可以節(jié)能降耗、減少環(huán)境污染,而且還可以增加車輛的載重量。為了適應(yīng)這種需要,目前普遍采用的方法是使用更高強(qiáng)度的鋼板,從而降低所使用鋼板的厚度,實現(xiàn)減重的目標(biāo),該類方法在現(xiàn)有的自卸車制造過程中已經(jīng)取得了良好的效果。然而,隨著鋼板的使用級別越來越高,當(dāng)繼續(xù)減薄時,所制造部件由于剛度的降低極易出現(xiàn)變形,因此,在使用鋼板降低到一定厚度后,不宜繼續(xù)減薄來降低重量實現(xiàn)輕量化的目標(biāo)。在這種情況下,可以使用密度更低的材料如鋁合金等來實現(xiàn)減重的目標(biāo),但是其價格極其昂貴,加工性能和焊接性能難以控制。在鋼中添加一定量密度較低的鋁元素的方法,可以實現(xiàn)所生產(chǎn)鋼板的密度降低,從而達(dá)到減重的目標(biāo),近年來該類方法在汽車制造用薄規(guī)格鋼板中有較多的研究和應(yīng)用,并已形成多項專利,但都是用于制造薄板,尚未涉及中厚鋼板的制造。且鋁元素含量過高時,鋼中易產(chǎn)生使性能惡化的κ碳化物。如于西納公司公開號為CN1688725A的名為“很高強(qiáng)度和低密度熱軋薄鋼板及其制造方法”的中國專利,該專利涉及高鋁低密度鋼板的生產(chǎn),但是主要是涉及薄規(guī)格鋼板的生產(chǎn)并被應(yīng)用于汽車制造,尚未涉及中厚規(guī)格鋼板及其生產(chǎn)工藝;安塞米塔爾法國公司研發(fā)的名稱為“具有良好可壓延性的低密度鋼”,申請?zhí)枮?00880016091,該專利涉及一種熱軋 ...
【技術(shù)保護(hù)點】
一種低密度輕質(zhì)自卸車車廂用耐磨鋼板,其特征在于,所述鋼板的組分按質(zhì)量百分比計包括:C?0.15~0.24%,Si?0.20~0.60%,Mn?1.20~1.80%,Al?3.00~4.00%,P≤0.014%,S≤0.004%,Nb?0.015~0.05%,V?0.00~0.05%,Ti?0.010~0.040%,Mo?0.00~0.60%,Cr?0.20~1.00%,B?0.0008~0.004%,N≤0.0050%,H≤1.5ppm,余量為Fe。
【技術(shù)特征摘要】
1.一種低密度輕質(zhì)自卸車車廂用耐磨鋼板,其特征在于,所述鋼板的組分按質(zhì)量百分比計包括:C0.15~0.24%,Si0.20~0.60%,Mn1.20~1.80%,Al3.00~4.00%,P≤0.014%,S≤0.004%,Nb0.015~0.05%,V0.00~0.05%,Ti0.010~0.040%,Mo0.00~0.60%,Cr0.20~1.00%,B0.0008~0.004%,N≤0.0050%,H≤1.5ppm,余量為Fe。2.根據(jù)權(quán)利要求1所述的一種低密度輕質(zhì)自卸車車廂用耐磨鋼板,其特征在于,所述鋼板的組分按質(zhì)量百分比計包括:C0.16~0.22%,Si0.20~0.50%,Mn1.20~1.60%,Al3.00~4.00%,P≤0.013%,S≤0.003%,Nb0.015~0.05%,V0.00~0.05%,Ti0.010~0.030%,Mo0.15~0.60%,Cr0.30~1.00%,B0....
【專利技術(shù)屬性】
技術(shù)研發(fā)人員:鄧想濤,王昭東,田勇,付天亮,王丙興,王國棟,
申請(專利權(quán))人:東北大學(xué),
類型:發(fā)明
國別省市:遼寧,21
還沒有人留言評論。發(fā)表了對其他瀏覽者有用的留言會獲得科技券。