摘要:
A wet paper web transfer belt comprises a base body, a wet paper web side layer, and a machine side layer. The wet paper web side layer is formed of a high molecular weight elastic section, and fibers and filler particles are exposed at its surface. The fibers and filler particles are exposed in the form of an island-sea structure comprising islands section where the fibers are exposed, and a sea section where the filler particles are exposed. The fibers and the filler particles, both exposed at the wet paper web side layer, hold water at different times in the papermaking process as the wet paper web moves out of the press part of the papermaking machine.
摘要:
The present invention provides a cam lobe material that is excellent in sliding characteristics, such as wear resistance, scuffing resistance and pitting resistance, and can be advantageously used in engines to which high loads are applied, and a method of manufacturing the cam lobe material. The above-described task is fulfilled by providing a cam lobe material that is formed from an iron-based sintered alloy that contains 0.3 to 5.0 mass % Ni, 0.5 to 1.2 mass % C, 0.02 to 0.3 mass % of at least either of B and P, and incidental impurities as the balance, and has a hardness of a peripheral surface of not less than HRC 50 and a density of not less than 7.5 g/cm3. The iron-based sintered alloy can further contain not more than 2.5 mass % Mo. The above-described task can also be fulfilled by a method of manufacturing the cam lobe material, that a compression molding step and a sintering step are repeated at least twice, the compression molding step involving compression molding iron-based alloy powders prepared so as to provide the composition of the ferrous sintered alloy in a prescribed cam lobe shape, and the sintering step involving sintering the compression molded compact body, and that the sintered body is subjected to quench and tempering treatment.
摘要翻译:本发明提供一种滑动特性优异的凸轮凸起材料,例如耐磨性,抗磨损性和耐点蚀性,并且可以有利地用于施加高负荷的发动机中,以及制造凸轮凸角材料的方法。 通过提供一种由铁基烧结合金形成的凸轮凸缘材料来实现上述任务,该铁基烧结合金含有0.3〜5.0质量%的Ni,0.5〜1.2质量%的C,0.02〜0.3质量%的B 和P,作为余量的偶然杂质,并且具有不小于HRC 50的周边表面的硬度和不小于7.5g / cm 3的密度。 铁基烧结合金还可以含有不超过2.5质量%的Mo。上述任务也可以通过制造凸轮凸起材料的方法来实现,压缩模制步骤和烧结步骤重复至少两次 所述压缩成形工序涉及将所述铁基合金粉末压缩成型,以提供规定的凸轮形状的所述铁质烧结合金的组成,所述烧结工序包括烧结所述压缩成型体,并且所述烧结体为 进行淬火和回火处理。
摘要:
In order to improve the decrease of the catalytic action and the deterioration of the exhaust purification performance, a catalyst installed in the exhaust pipe of an engine and a secondary air pump for supplying secondary air into the exhaust pipe are provided, and the secondary air pump is operated even after the engine has stopped.
摘要:
A wet paper web transfer belt comprises a base body, a wet paper web side layer, and a machine side layer. The wet paper web side layer is formed of a high molecular weight elastic section, and fibers and filler particles are exposed at its surface. The fibers and filler particles are exposed in the form of an island-sea structure comprising islands section where the fibers are exposed, and a sea section where the filler particles are exposed. The fibers and the filler particles, both exposed at the wet paper web side layer, hold water at different times in the papermaking process as the wet paper web moves out of the press part of the papermaking machine.
摘要:
If the output of an O2 sensor located downstream of a catalyst deviates from a predetermined range, the air-to-fuel ratio upstream of the catalyst is over-corrected to be a leaner value or a richer value beyond the predetermined purification-efficiency range when the output of the O2 sensor downstream of the catalyst indicates rich or lean, respectively, so that the output of the O sensor downstream of the catalyst returns within a predetermined range as soon as possible.